MedigapGuide

Category: Enrollment

Medicare supplement enrollment and sign-up guides

  • Medicare Supplement Enrollment Deadline: Don’t Miss Your Window

    Medicare Supplement Enrollment Deadline: Don’t Miss Your Window

    You Have a Six-Month Window — and It Closes Whether You’re Ready or Not

    The moment you’re both 65 and enrolled in Medicare Part B, a six-month clock starts ticking. That’s your Open Enrollment Period for Medicare supplement (Medigap) insurance, and it’s the only time in your life when insurance companies are legally required to sell you a policy at standard rates — no health questions, no underwriting, no rejection.

    After that window closes, you’re at the mercy of insurers. They can charge you more because of your health history. They can make you wait for coverage on pre-existing conditions. They can flat-out deny you. I’ve watched people miss this window by a few weeks and spend years paying hundreds of dollars extra per month as a result. It’s one of the most expensive mistakes a Medicare beneficiary can make.

    So let’s get specific about how this works, what trips people up, and what you should actually do.

    How the Enrollment Window Is Calculated

    Your Medigap Open Enrollment Period begins on the first day of the month you turn 65 and are enrolled in Medicare Part B. That second part matters more than most people realize.

    If you turn 65 in October but delay Part B enrollment because you have employer coverage, your six-month window doesn’t start in October. It starts the month your Part B coverage begins — even if that’s years later. That’s actually good news for people with employer insurance. You’re not penalized for waiting as long as you have a valid reason.

    Here’s where it gets tricky. Some people enroll in Part A at 65 (it’s free for most people, so why not?) but hold off on Part B. They assume their Medigap window opened when they turned 65. It didn’t. The window is tied to Part B, full stop.

    A few specifics worth knowing:

    • The six months runs from the first day of the month your Part B starts, not your actual birthday
    • If your Part B start date is November 1, your window closes April 30 of the following year
    • You can apply for Medigap before your Part B effective date — most insurers will accept applications up to six months in advance, with coverage starting when Part B begins
    • Applying early is almost always smarter than waiting until the last minute

    Don’t assume you have more time than you do. Pull up your Medicare card, find your Part B effective date, and count out six months. Write it on a sticky note if you have to.

    The Biggest Mistake People Make (And It’s an Expensive One)

    I’ve seen this happen more times than I can count: someone turns 65, signs up for Medicare Advantage instead of Original Medicare plus a Medigap plan, and figures they’ll switch to a supplement later if they don’t like the Advantage plan.

    Here’s the problem. Once your Medigap Open Enrollment Period closes, switching from Medicare Advantage to a Medigap plan in most states means going through medical underwriting. You fill out a health questionnaire. The insurer reviews your medical history. If you’ve been diagnosed with diabetes, heart disease, COPD, or even something as common as sleep apnea in the years since your window closed, you can be charged significantly more — or denied entirely.

    There’s a federal trial period rule that gives you 12 months to switch back if it’s your first time trying Medicare Advantage, but that protection only applies during your initial enrollment. After that, you’re largely unprotected in most states.

    A handful of states — Connecticut, Massachusetts, Maine, New York, and a few others — have continuous open enrollment rules that require insurers to sell Medigap regardless of health history. If you live in one of those states, you have more flexibility. But most people don’t, and most people don’t find this out until it’s too late.

    My opinion: if you’re torn between Medicare Advantage and a Medigap plan during your Open Enrollment Period, consider locking in the Medigap plan first. You can always disenroll from a Medigap plan if your circumstances change. Getting back into one later is much harder.

    What Medigap Plans Are Available and What They Cost Right Now

    For most newly eligible seniors in 2026, the real choice comes down to Plan G or Plan N. Plan F used to be the top pick, but it’s no longer available to people who became eligible for Medicare after January 1, 2020.

    Here’s a plain-language comparison of the main options:

    Plan Part A Deductible Covered Part B Deductible Covered Part B Excess Charges Covered Typical Monthly Premium (Age 65)
    Plan G Yes No Yes $100 – $200
    Plan N Yes No No $80 – $150
    Plan K 50% No No $50 – $90
    Plan L 75% No No $70 – $110

    The 2026 Part B deductible is $257. Neither Plan G nor Plan N covers it, so you’ll pay that out of pocket once per year regardless of which you choose. The 2026 Part A deductible is $1,676 per benefit period — and both Plan G and Plan N cover that in full.

    For most healthy 65-year-olds, Plan G is the cleaner choice. You pay the $257 Part B deductible once a year and that’s essentially it — no copays, no surprise bills, no worrying about whether your doctor accepts Medicare assignment. Plan N costs a bit less per month but comes with copays of up to $20 for doctor visits and $50 for emergency room visits, plus it doesn’t cover Part B excess charges if your doctor bills above Medicare’s approved amount.

    Premiums vary a lot by state and insurer. A 65-year-old woman in Florida might pay $165/month for Plan G from one company and $130/month for the exact same Plan G coverage from another. The benefits are identical — all Plan G policies must cover the same things by law. Shop around, and do it through an independent broker who works with multiple carriers.

    Special Enrollment Rights That Can Extend Your Window

    Beyond the standard six-month window, there are situations that give you a guaranteed issue right — meaning you can buy Medigap without underwriting even after your Open Enrollment Period has closed.

    These are called Special Enrollment Periods, and they exist because life doesn’t always fit a neat timeline. The most common triggers include:

    • Losing employer coverage: If you stayed on a spouse’s employer plan past 65 and that coverage ends, you typically have 63 days to enroll in Medigap with guaranteed issue rights
    • Medicare Advantage plan leaves your area: If your plan stops operating where you live, you get a guaranteed issue right to switch to Medigap
    • Your Medigap insurer goes bankrupt: Rare, but it happens, and you’d be protected
    • You moved out of your plan’s service area: This triggers a guaranteed issue period in most cases
    • Medicare SELECT plan (a network-based Medigap): If you move outside the network area, you have rights to switch to a standard Medigap plan

    These windows are typically 63 days, not six months. Don’t sit on them. If you lose qualifying coverage on September 1, you need to have your Medigap application submitted well before early November. Insurance processing takes time, and you don’t want a gap.

    One note: having a guaranteed issue right doesn’t mean every insurer has to accept you. It means insurers that sell Medigap in your state cannot deny you the specific plan types covered under that right. Usually that’s Plan A, Plan B, Plan D, Plan G, Plan K, or Plan L — not always Plan N. Check the specifics for your situation.

    Bottom Line

    For most newly eligible Medicare beneficiaries, Plan G is the right Medigap plan, and the right time to buy it is during your six-month Open Enrollment Period — not later, not “once you see how Medicare Advantage goes.” The financial risk of missing that window is real and lasting. If you’re within a year of your Part B effective date, start comparing Plan G premiums from multiple insurers now, through an independent broker who doesn’t have a horse in the race.

    Frequently Asked Questions

    What happens if I miss my Medigap Open Enrollment Period?

    In most states, you’ll be subject to medical underwriting if you try to buy a Medigap policy after your six-month window closes. That means insurers can charge you more based on your health history, add waiting periods for pre-existing conditions, or deny your application altogether. A few states — including New York, Connecticut, and Massachusetts — have stronger consumer protections, but the majority of Americans don’t live in those states. Missing the window is a serious financial risk.

    Can I buy Medigap at any time if I’m healthy?

    Technically yes, but that’s not really the point. Even if you’re in perfect health today and get approved at standard rates, you’re giving up your one guaranteed chance to lock in coverage regardless of your future health. Buy during your Open Enrollment Period. Your 75-year-old self will thank your 65-year-old self for it.

    Does my Open Enrollment Period restart if I move to a new state?

    No. Your Medigap Open Enrollment Period is a one-time federal right tied to your Part B effective date. It doesn’t reset when you move. That said, some states have their own additional protections, and moving can trigger a Special Enrollment Period under certain circumstances. It’s worth checking the rules in your new state, but don’t count on getting a fresh six-month window.

    I’m still working at 65 with employer coverage. When does my window start?

    Your Medigap Open Enrollment Period starts the month your Part B coverage begins, not when you turn 65. If you delay Part B enrollment because you have qualifying employer coverage, your six-month window opens when you eventually enroll in Part B — which might be at 67, 68, or later. This is one of the legitimate reasons to delay Part B, and it doesn’t cost you your enrollment rights as long as you transition correctly when you leave your employer plan.

  • Getting Medicare Supplement After Age 70: What You Need to Know

    Yes, You Can Get a Medigap Plan After 70 — But the Rules Are Not in Your Favor

    You can absolutely get a Medicare supplement plan after age 70. There’s no age cutoff, no law that shuts the door on you. What there is, though, is medical underwriting — and that’s where things get complicated for a lot of people who waited.

    Here’s the thing. When you first enrolled in Medicare Part B at 65, you had a six-month window called the Open Enrollment Period. During that window, insurers were required by federal law to sell you any Medigap plan they offered, at any price, with no medical questions. That window is gone now. And most people I talk to who are trying to enroll at 70, 73, or 76 had no idea that window even existed until it closed behind them.

    So what does that mean for you today? It means you’re applying in the “guaranteed issue” market only if you qualify for a special exception — or you’re going through full medical underwriting, where the insurer gets to say yes, no, or “yes, but we’re going to charge you more.” In most states, they can decline you entirely based on your health history. That’s the reality you’re working with.

    That said, there are real paths forward, and some of them work out fine. Let me walk you through what actually matters.

    How Medical Underwriting Works After Your Open Enrollment Window Closes

    When you apply for Medigap outside of a guaranteed issue situation, the insurance company pulls your medical records and asks you a health questionnaire. The specific questions vary by insurer and state, but they typically ask about things like recent hospitalizations, diabetes, heart conditions, COPD, kidney disease, and cancer diagnoses in the last several years.

    If you answer yes to certain conditions, you could get declined. Or you might be approved with a rider that excludes coverage for a specific condition. Or you might just pay a higher premium than someone who applied at 65 in perfect health.

    I’ve seen a 71-year-old in good health with no major conditions get approved for Plan G at a reasonable premium without much drama. I’ve also seen a 68-year-old with a recent stent procedure get declined by every carrier she applied to. Age itself isn’t what kills you in underwriting. Your health history is.

    One important thing: premiums do increase with age regardless of your health. A Plan G that costs a 65-year-old about $130/month in Ohio might run $180-$220/month for a 72-year-old in the same zip code, even before any health surcharges. That’s just age-based rating at work.

    The Situations Where You’re Still Guaranteed Coverage After 70

    There are specific circumstances where even after your initial Open Enrollment Period has passed, you still get guaranteed issue rights. These are called Special Enrollment Periods, and they’re not automatic. You have to qualify for one.

    The most common situations that trigger guaranteed issue rights include:

    • Your Medicare Advantage plan is leaving your area or losing its Medicare contract
    • You moved out of your Medicare Advantage plan’s service area
    • You had employer-sponsored coverage that is now ending
    • Your Medigap insurer went bankrupt or misled you into dropping your previous coverage
    • You’re in a state that offers its own additional guaranteed issue protections

    That last point deserves more attention than it usually gets. A handful of states have stronger consumer protections than federal law requires. Connecticut, Maine, Massachusetts, and New York (among a few others) offer year-round guaranteed issue rights regardless of your health. If you live in one of these states, you’re in a very different situation than someone in Texas or Florida trying to enroll at 72 with a health history.

    New York, for example, uses community rating, which means every person in the same plan pays the same premium regardless of age or health. That’s a genuinely better deal for older enrollees with health conditions. The premiums tend to be higher across the board because healthier people are in the same pool, but for someone who couldn’t pass underwriting elsewhere, it can be the only real option.

    The Biggest Mistake People Make When Trying to Enroll Late

    I’ll be direct: the most common mistake I see is people assuming that any guaranteed issue situation they find themselves in covers every Medigap plan.

    It doesn’t. Federal guaranteed issue rights typically apply only to Plans A, B, C, F, K, or L, depending on your specific situation. Plans G and N, which are the most popular plans being sold right now, are often not included in federal guaranteed issue protections.

    This creates a real problem. Plan G is the best-value plan for most people in 2026, covering virtually everything except the 2026 Part B deductible of $257. But if you’re trying to enroll through a guaranteed issue special enrollment period triggered by a Medicare Advantage disenrollment, you may be limited to older plan types that don’t offer the same coverage or value.

    States that have their own guaranteed issue laws (like New York or Connecticut) often cover Plan G and Plan N as well. But federally, the protections are more limited than most people expect.

    Always verify which plans are covered under your specific guaranteed issue situation before assuming you can get the plan you actually want. Call your State Health Insurance Assistance Program (SHIP) if you’re not sure. They’re free, and they know the rules in your state cold.

    Comparing Your Main Options After Age 70

    The realistic choices for someone trying to get coverage after 70 break down roughly like this:

    Option Available If Health Requirements Plan Choices Best For
    Apply through underwriting Always available Must pass medical review All plans (G, N, A, etc.) Healthy applicants with clean medical history
    Federal guaranteed issue SEP Qualifying life event only None required Limited (A, B, C, F, K, L in most cases) People leaving Medicare Advantage or losing employer coverage
    State-based guaranteed issue Must live in a state with these rules None required Often includes G and N People in states like NY, CT, ME, MA with health conditions
    Medicare Advantage instead Annual enrollment Oct 15 – Dec 7 Cannot be denied for health N/A (different product) People who can’t get Medigap and need an alternative

    That last row matters. If underwriting rejects you and you don’t qualify for a special enrollment period, Medicare Advantage is your safety net. You cannot be denied a Medicare Advantage plan based on health. The trade-off is that Medicare Advantage comes with networks, prior authorizations, and out-of-pocket exposure that Medigap doesn’t. For someone with significant chronic conditions who uses a lot of healthcare, that trade-off deserves careful thought.

    Bottom Line

    If you’re in good health, apply for Medigap through standard underwriting right now. Don’t wait any longer. Every year you delay, premiums go up and your health could change. For most people in decent health, Plan G is the right choice, and you’ll likely be approved. If you have serious health conditions and you live in a state with strong consumer protections like New York or Connecticut, use those state rules to get in. If neither of those paths works, look hard at Medicare Advantage rather than going unprotected.

    Frequently Asked Questions

    Is there a maximum age to apply for Medicare supplement insurance?

    No. There’s no federal age limit for applying for Medigap. Insurers can and do sell plans to people in their 80s and beyond. The challenge isn’t age as a legal barrier, it’s that premiums increase with age and medical underwriting becomes harder to pass if you’ve accumulated health conditions over the years.

    What if I’ve been on Medicare Advantage and want to switch to Medigap at 72?

    This is one of the most common situations I hear about, and it’s genuinely tricky. Unless your Medicare Advantage plan is being discontinued or leaving your area, switching to Medigap after a voluntary disenrollment does not give you guaranteed issue rights in most states. You’ll have to go through underwriting. If your health is good, that might be fine. If it’s not, you could get declined. Check your state’s rules before you disenroll from Medicare Advantage, because once you’re out, you may not get back in on your own terms.

    Can I be charged more for Medigap because of my age after 70?

    Yes. Most states allow age-rated Medigap premiums, which means the older you are, the more you pay for the same plan. Premiums at 72 or 75 will be meaningfully higher than at 65 for the same coverage. A few states use community rating, where everyone pays the same regardless of age, but that’s the exception, not the rule.

    Will pre-existing conditions be covered if I do get approved for Medigap after 70?

    If you pass underwriting and get approved, your coverage generally starts immediately with no pre-existing condition waiting period, as long as you’ve had continuous Medicare coverage. The insurer might decline you because of a condition, or exclude coverage for it with a rider, but if you’re approved without riders, your pre-existing conditions are covered. This is different from how things worked before 2014 under older insurance rules.

  • Missed Medigap Open Enrollment? Here’s What to Do

    Missed Medigap Open Enrollment? Here’s What to Do

    Missing Medigap Open Enrollment Is a Big Deal — But It’s Not Always a Dead End

    Miss your Medigap open enrollment window and you could spend years paying more than you should, or get denied coverage entirely. I’ve seen it happen more times than I’d like. But I’ve also seen people find their way into decent coverage after missing it, so let’s talk about what actually happens and what your real options are.

    Your Medigap open enrollment period (OEP) starts the first month you’re both 65 or older and enrolled in Medicare Part B. It lasts exactly six months. During that window, every insurance company that sells Medigap in your state is legally required to sell you any plan they offer, at their standard rates, regardless of your health history. You can have had cancer, heart surgery, diabetes — doesn’t matter. They have to take you.

    Once that window closes, federal law no longer forces insurers to take you. Most states don’t have their own rules requiring it either. That’s when medical underwriting kicks in, and that’s when things get complicated.

    What Medical Underwriting Actually Means for You

    Medical underwriting is the process insurers use to decide if they want to insure you, and at what price. Outside of your open enrollment window, a Medigap insurer can ask about your health history, request your medical records, and then do one of three things: approve you at standard rates, approve you at a higher premium, or deny you outright.

    That third option is the one people don’t expect. A flat-out denial. You apply, they review your records, and they say no. This isn’t rare — it happens regularly to people with conditions like congestive heart failure, COPD, a recent cancer diagnosis, or end-stage renal disease. Some conditions are near-automatic denials at most carriers.

    Here’s what that looks like in practice. A 68-year-old in Ohio who missed her OEP three years ago tries to switch from a Medicare Advantage plan to a Medigap Plan G. She has Type 2 diabetes, managed well, and a knee replacement from two years ago. She applies to four carriers. Two deny her. One approves her but adds a six-month waiting period on any knee-related costs. One approves her at standard rates. That kind of variation is real, and it’s exhausting to sort through.

    The underwriting questions vary by insurer, but they typically cover things like: hospitalizations in the last 12 to 36 months, any current prescriptions and what they’re for, diagnoses of heart disease, cancer, stroke, COPD, or kidney disease, and whether you use a walker, wheelchair, or home health aide. Answer yes to the wrong combination of questions and you’re done before you even get to pricing.

    The Situations Where You Still Have Guaranteed Issue Rights

    Even outside open enrollment, there are specific life events that give you what’s called “guaranteed issue” rights. These are your lifelines. If you qualify, insurers cannot deny you and cannot charge you more based on your health history.

    The most common guaranteed issue situations include:

    • Your Medicare Advantage plan is leaving your area or going out of business
    • You move out of your Medicare Advantage plan’s service area
    • You have employer or union coverage that’s ending
    • You joined a Medicare Advantage plan when you first became eligible and want to switch back within 12 months (this is called a “trial right”)
    • Your Medigap insurer goes bankrupt or your current plan is discontinued

    The trial right one is worth knowing specifically. If you turned 65, enrolled in Medicare Advantage instead of Original Medicare plus a Medigap plan, and you’re within your first 12 months of that Advantage plan, you can drop it and buy any Medigap Plan A, B, C, F, K, or L with guaranteed issue rights. That window is real and it closes fast. Use it if you have it.

    Here’s a comparison of what you’re dealing with depending on your situation:

    Your Situation Guaranteed Issue? Underwriting Required? Best Option
    Within your 6-month OEP at 65 Yes No Buy Plan G now
    Within 12-month Medicare Advantage trial period Yes (select plans) No Switch to Original Medicare + Medigap
    Medicare Advantage plan being discontinued Yes No Choose Medigap during the window
    Employer coverage ending Yes No Apply within 63 days of coverage ending
    Missed OEP, no qualifying event, good health No Yes Apply to multiple carriers, compare
    Missed OEP, no qualifying event, serious conditions No Yes Consider staying on Medicare Advantage

    The Biggest Misconception People Have About This

    I hear this one constantly: “I’ll just sign up for Medigap when I actually need it.” People think they can stay on Medicare Advantage while they’re healthy and then switch to a Medigap plan when they get sick. That’s not how it works, and it’s one of the most expensive assumptions I’ve seen people make.

    The moment you develop a serious condition — a cancer diagnosis, heart failure, a stroke — is exactly when you’ll be denied Medigap coverage. Insurers aren’t going to let you jump ship from Medicare Advantage right when you’re about to become expensive. The system isn’t set up to allow that, and they know exactly what they’re doing.

    The same logic applies to people who think they’ll “reassess” after their open enrollment period ends. By the time you’re reassessing, your health may have changed. A 66-year-old in good shape has very different underwriting odds than a 70-year-old with a couple of hospitalizations behind them. Every year you wait without a qualifying event is a year the odds shift slightly against you.

    There’s also a misconception that all states work the same way. They don’t. A handful of states have their own guaranteed issue protections. Connecticut, Maine, Massachusetts, New York, and a few others have state-level rules that give residents more rights than federal law provides. If you live in one of these states, your options after missing OEP are meaningfully better. If you’re not in one of these states, you’re largely on your own.

    What to Do If You’ve Already Missed It and Have No Qualifying Event

    Okay. So you missed it. No trial right, no plan discontinuation, no employer coverage ending. You’re in the underwriting pool whether you like it or not. Here’s what I’d actually tell you to do.

    First, get an independent broker — not someone captive to one company, but someone who can shop across multiple carriers. Underwriting standards vary significantly from insurer to insurer. One company might deny you for a condition another one accepts. This isn’t a market where loyalty to a brand matters. You’re looking for whoever will take you at the best price.

    Second, be honest on your applications. I know that sounds obvious, but people fudge answers thinking the insurer won’t find out. They will find out, and when they do, they can rescind your coverage and leave you on the hook for claims already paid. Don’t do it.

    Third, if you’re being denied everywhere, take a serious look at whether a Medicare Advantage plan actually serves your needs. I don’t love Advantage plans for people with complex health needs because of the network restrictions, prior authorizations, and out-of-pocket exposure. But for someone who can’t get Medigap at any price, a well-structured Advantage plan with low out-of-pocket maximums is far better than sitting on Original Medicare alone with no supplement at all.

    The 2026 Part A deductible is $1,676 per benefit period, and there’s no cap on how many benefit periods you can hit in a year. Without some kind of supplement, you’re exposed. A Medicare Advantage plan with a $3,500 in-network out-of-pocket maximum is painful, but it’s a ceiling. Original Medicare with nothing is not.

    If you’re in good health and missing OEP but have no conditions that would trigger denials, honestly, just apply. The worst they can say is no. Plan G premiums for a healthy 67-year-old run roughly $130 to $190 a month in most states in 2026, depending on the carrier. That’s very manageable coverage, and you might well qualify for it even outside your OEP.

    Bottom Line

    If you’re still inside your Medigap open enrollment period, stop reading this and go apply for Plan G today. That window is the single most valuable thing you have in the Medicare world, and you should use it. If you’ve already missed it, work with an independent broker immediately, apply to multiple carriers, and don’t assume you’re denied until an actual underwriter tells you so. For people with serious health conditions who can’t get Medigap, a low-copay Medicare Advantage plan beats going unprotected on Original Medicare alone.

    Frequently Asked Questions

    Can I get Medigap if I’m already sick and missed my open enrollment period?

    It depends on what conditions you have. Some conditions like diabetes or controlled high blood pressure may still allow you to get approved, especially if they’re well-managed. Others, like a recent cancer diagnosis or end-stage renal disease, are typically automatic denials at most carriers. Apply to several companies, because underwriting guidelines differ. Don’t assume one rejection means all rejections.

    Does missing Medigap open enrollment affect my Medicare Part B or Part D?

    No. Medigap open enrollment is separate from your Part B and Part D enrollment periods. Missing your Medigap OEP only affects your ability to buy a Medigap supplement plan without underwriting. Your Part B and Part D coverage aren’t touched by it.

    What if I turn 65 but don’t enroll in Part B right away because I have employer coverage?

    This is actually fine. Your Medigap OEP starts when you enroll in Part B, not necessarily when you turn 65. So if you have employer group coverage through age 68 and then enroll in Part B when you retire, your six-month Medigap OEP begins at that point. You won’t have missed it. The key is that you have to actually enroll in Part B to start the clock.

    Are there any states where I can buy Medigap anytime, regardless of health?

    Yes, a few states have enacted their own guaranteed issue protections that go beyond federal law. New York and Connecticut, for example, require insurers to sell Medigap plans to anyone on Medicare regardless of health, year-round. Massachusetts has its own Medigap rules that also provide stronger consumer protections. If you live in one of these states, the consequences of missing your OEP are significantly less severe. Check your state insurance department’s rules, because this can make a real difference in your options.

  • Medicare Supplement Waiting Period After Initial Enrollment

    Medicare Supplement Waiting Period After Initial Enrollment

    The Timing of When You Sign Up for Medigap Changes Everything

    Miss your initial enrollment window by even a few months and you could face a waiting period, higher premiums, or a flat-out denial for Medicare supplement coverage. That’s not a scare tactic. That’s exactly what happens to people every single year, and it’s almost always avoidable if you know the rules ahead of time.

    Here’s the thing. Most people assume Medicare is Medicare. They think if they’re enrolled in Part A and Part B, they can just pick up a Medigap plan whenever they feel like it. That’s wrong, and that assumption is costing people serious money. The Medicare supplement waiting period after initial enrollment is one of the most misunderstood pieces of the entire Medicare puzzle, so let me break it down the way I’d explain it to a friend sitting across the table from me.

    What the Medigap Open Enrollment Period Actually Is

    When you first enroll in Medicare Part B, you get a six-month window called the Medigap Open Enrollment Period (OEP). This is your golden ticket. During this window, insurance companies are legally required to sell you any Medigap plan they offer in your state. They cannot deny you coverage. They cannot charge you more because of pre-existing conditions. They have to take you.

    That window opens the first day of the month you’re both 65 or older AND enrolled in Part B. Once it starts, you have six months. Not a day more. Once it closes, it’s gone forever. There’s no annual Medigap open enrollment period the way there is for Medicare Advantage. You don’t get another shot every fall.

    During your OEP, there is no waiting period for pre-existing conditions. A plan you buy during this window has to cover you from day one. This is why timing matters so much. A 65-year-old in Ohio who signs up for a Plan G during her Medigap OEP pays the same premium as a healthy 65-year-old with no medical history. She cannot be turned away because she had knee surgery two years ago or because she’s managing a chronic condition.

    Miss the window, though, and the rules flip entirely in the insurance company’s favor.

    When Waiting Periods Apply and How Long They Last

    If you try to buy a Medigap plan outside of your OEP and you don’t qualify for a Special Enrollment Period (more on that in a moment), insurers in most states can do two things: they can deny your application entirely, or they can accept you but impose a waiting period for pre-existing conditions.

    Federally, the maximum pre-existing condition waiting period is six months. That means if you have a condition that was diagnosed or treated in the six months before you applied for the Medigap plan, the insurer can refuse to cover costs related to that condition for up to six months after your coverage starts. You’re paying premiums the whole time. You just don’t have coverage for the things you actually need covered.

    However, there’s one important exception to that waiting period. If you had creditable coverage before applying for the Medigap plan, that prior coverage can reduce or eliminate the waiting period. For example, if you had employer-sponsored insurance, COBRA, or a retiree health plan before moving to Medigap, that coverage counts. Each month of prior creditable coverage reduces the six-month waiting period by one month. If you had six or more months of creditable coverage immediately before your Medigap application, the pre-existing condition waiting period goes away entirely.

    It’s also worth knowing that some states have stronger consumer protections than this. California, Connecticut, Maine, Massachusetts, New York, and a handful of others have guaranteed issue rights that go beyond federal minimums. If you live in one of those states, your options outside the OEP are better. But most people don’t live in those states, and I’ve seen too many people assume their state protects them when it doesn’t.

    The Guaranteed Issue Rights That Can Save You

    Outside of your Medigap OEP, your best friend is a guaranteed issue right. These are specific situations where, even after your OEP has closed, an insurer must sell you a Medigap policy without medical underwriting or waiting periods.

    The situations that trigger guaranteed issue rights include:

    • Your Medicare Advantage plan is leaving your area or you’re moving out of the plan’s service area
    • Your employer or union group coverage is ending
    • You’re losing coverage because your insurer goes bankrupt or becomes insolvent
    • You joined a Medicare Advantage plan when you first became eligible for Medicare and you want to switch back to Original Medicare within the first year
    • You enrolled in a Medigap plan when you first became eligible but want to switch to a different Medigap plan within the first year

    That last one is important. If you bought a Medigap plan and you’re not happy with it, you have a 12-month trial period to switch back. But the clock starts the day your Medigap coverage began, not the day you decided you were unhappy.

    When a guaranteed issue right applies, the insurer can’t impose a waiting period. They have to cover pre-existing conditions from day one. It’s essentially a second chance at the protections you had during your OEP.

    The Biggest Mistake I See People Make

    I’ve watched a lot of people delay enrolling in Part B because they’re still working and they figure their employer coverage is good enough. And sometimes it is. But here’s where things go sideways: when they eventually retire and lose that employer coverage, they don’t realize their Medigap OEP doesn’t automatically restart.

    Actually, it does have a triggered enrollment period for Part B in that situation. But I mean they don’t realize they need to act fast. The Medigap OEP opens when you enroll in Part B. If you delay Part B enrollment and then enroll in Part B at age 68 when you retire, your Medigap OEP opens at that point. You’re fine, as long as you enroll in Part B and Medigap at the same time. Where people get hurt is when they enroll in Part B, then wait six months or a year before buying a Medigap plan. That OEP doesn’t pause. It runs out six months from when you first enrolled in Part B, whether you bought a Medigap plan or not.

    I’ve talked to people who had employer coverage, enrolled in Part B to pick up some extra coverage, waited a year, and then tried to buy Medigap only to find out their OEP was long gone. Now they’re going through medical underwriting. One man in Michigan told me he’d been diagnosed with atrial fibrillation during that waiting year, and no insurer would touch him at standard rates.

    The other misconception I hear constantly is that Medicare Advantage is a form of Medigap. It is not. Enrolling in a Medicare Advantage plan does not protect your Medigap OEP. You can try Medicare Advantage for up to 12 months and then switch back to Original Medicare with a guaranteed issue right for Medigap. But after that first year, you’re in the same boat as everyone else outside the OEP.

    What Plans Are Available During Guaranteed Issue vs. Open Enrollment

    During your Medigap OEP, you can buy any plan the insurer offers in your state. That’s typically Plans A, B, D, G, K, L, M, and N. (Plans C and F are still available to people who were eligible for Medicare before January 1, 2020.)

    During a guaranteed issue situation outside the OEP, the options are more limited. Federal law requires insurers to offer you Plans A, B, K, and L at minimum. In many cases, they’ll also offer D and G. But you may not have access to every plan you’d have during your OEP.

    Enrollment Situation Medical Underwriting? Pre-Existing Condition Waiting Period? Plans Available
    Medigap OEP (first 6 months with Part B) No No All plans offered in your state
    Guaranteed Issue Right (qualifying event) No No Plans A, B, K, L (sometimes D, G)
    Outside OEP, no qualifying event Yes, in most states Up to 6 months (can be offset by prior coverage) Whatever insurer agrees to offer you

    Plan G is the plan I’d point most people toward in 2026 if they’re buying during their OEP. Premiums typically run between $100 and $200 per month at age 65, depending on your state and the insurer. You’re responsible for the 2026 Part B deductible of $257 per year, and then Plan G covers virtually everything else, including the Part A deductible of $1,676 per benefit period in 2026. For most people, it’s the cleanest, most predictable coverage available.

    Bottom Line

    Don’t gamble with your Medigap OEP. The six months after you first enroll in Part B are the most valuable window you have in all of Medicare, and once it’s gone, it’s gone. If you’re approaching 65 or you’re helping a parent figure this out, get a Medigap plan in place before that window closes. Plan G is the right call for most people who want to stop worrying about what Medicare doesn’t cover.

    Frequently Asked Questions

    Can I be denied Medigap coverage for pre-existing conditions?

    Yes, in most states you can be denied or charged higher premiums if you apply outside your Medigap OEP and don’t have a qualifying guaranteed issue right. During your OEP, no insurer can deny you or charge you more for any health reason.

    Does the six-month Medigap waiting period apply to everyone?

    No. It only applies if you’re applying for Medigap outside your OEP and you don’t qualify for a guaranteed issue right. If you have creditable prior coverage, you can reduce or eliminate the waiting period based on how long that coverage lasted.

    What happens if I missed my Medigap open enrollment period?

    You’ll need to go through medical underwriting in most states, which means you could be denied coverage or charged higher premiums based on your health history. Check whether you qualify for a guaranteed issue right first. If you don’t, look into whether your state has stronger consumer protections than the federal minimum before assuming you’re stuck.

    If I have a guaranteed issue right, do I have access to Plan G?

    Not always. Federal law only requires insurers to offer Plans A, B, K, and L in guaranteed issue situations. Many insurers voluntarily offer Plan G in these situations, but it’s not guaranteed. If Plan G access is important to you, that’s another reason not to let your OEP expire without using it.

  • How to Apply for Medicare Supplement Insurance

    How to Apply for Medicare Supplement Insurance

    The Application Process Is Simple. The Timing Is Not.

    Applying for Medicare supplement insurance takes about 20 minutes. Getting the right coverage at the right time, without overpaying or getting rejected, takes knowing a few things most people find out too late.

    The actual mechanics are straightforward: you pick a plan, you pick a company, you fill out an application either online, over the phone, or on paper, and you get approved or you don’t. But that last part, “or you don’t,” is where things get complicated. And it’s why timing matters more than almost anything else in this process.

    Let me walk you through how this actually works, in order, so you don’t make a mistake that follows you for years.

    Step One: Understand What You’re Buying Before You Apply

    Medicare supplement insurance, also called Medigap, covers the gaps that Original Medicare (Parts A and B) leaves behind. Things like the 2026 Part A deductible of $1,676 per benefit period, the 20% coinsurance you’d owe on outpatient services, and excess charges from doctors who don’t accept Medicare assignment.

    Plans are standardized by the federal government. That means a Plan G from Humana and a Plan G from Mutual of Omaha cover exactly the same things. You’re not choosing between different coverage levels when you compare companies, you’re comparing price and customer service. That’s it.

    Right now, Plan G is the most popular choice for new enrollees, and for good reason. It covers everything Medicare doesn’t except the 2026 Part B deductible of $257. Once you’ve paid that $257 out of pocket for the year, Plan G covers the rest. For a 65-year-old in good health, you can find Plan G premiums in the $110 to $160 per month range depending on your state and the insurer. In higher-cost states like New York or Florida, you might see premiums closer to $180 to $200. In lower-cost states like Iowa or Indiana, you could land closer to $100.

    Plan N is worth considering if you’re healthy and willing to take on small copays (up to $20 for office visits, up to $50 for emergency room visits) in exchange for a lower premium, often $30 to $50 cheaper per month than Plan G. For someone who sees their doctor twice a year and rarely goes to the ER, Plan N can make real sense.

    Here’s a quick comparison of the most common plans people apply for:

    Plan Part A Coinsurance Part B Coinsurance Part B Deductible Excess Charges Typical Monthly Premium (Age 65)
    Plan G Yes Yes No Yes $110 – $200
    Plan N Yes Yes (with copays) No No $80 – $160
    Plan G (High Deductible) Yes Yes No Yes $30 – $70

    High-Deductible Plan G is worth mentioning because it’s underused. You pay a 2026 deductible of $2,870 before coverage kicks in, but your monthly premium can be under $50. For someone who’s genuinely healthy and has savings to cover a bad year, this can be a smart long-term play.

    Step Two: Apply During Your Open Enrollment Window or Lose Your Leverage

    Here’s where I’ve seen more people get hurt than anywhere else in this process.

    You have a six-month Open Enrollment Period (OEP) for Medigap that starts the month you turn 65 and are enrolled in Medicare Part B. During this window, insurers cannot deny you coverage, charge you more because of health conditions, or make you wait for pre-existing conditions to be covered. It’s the one time in your Medicare life when you hold all the cards.

    Once that window closes, most states allow insurers to underwrite you. That means they can look at your health history and say no. Atrial fibrillation, diabetes, COPD, recent cancer, recent surgeries, even obesity in some states, these can all lead to a denial or a higher premium. I’ve talked to people who waited a year or two before signing up for Part B because they were still on employer coverage, and they didn’t realize their Medigap OEP clock started the moment they enrolled in Part B, not the moment they turned 65. If you miss your window, you may never get another clean shot at guaranteed issue coverage.

    A few states handle this differently. California, Connecticut, Maine, Massachusetts, Missouri, New York, and a handful of others have stronger consumer protections and allow you to switch or apply for Medigap at any time without underwriting. If you live in one of those states, you have more flexibility. If you don’t, treat your OEP like it’s your one shot.

    The Biggest Mistake People Make: Waiting to See If They Need It

    I understand the logic. You feel healthy. You don’t want to pay premiums for something you’re not using. You think you’ll sign up later if something comes up. But this is backwards thinking when it comes to Medigap, and it costs people dearly.

    The whole point of supplement insurance is to protect you before something goes wrong, not after. And after something goes wrong, you may not be able to get it. That’s not a hypothetical. I’ve seen a 68-year-old woman in Michigan who was diagnosed with MS two years after her OEP closed. She applied to four different Medigap insurers. All four denied her. She stayed on Original Medicare alone, and each hospitalization hit her with the full $1,676 Part A deductible.

    The other version of this mistake is enrolling in a Medicare Advantage plan at 65 because the premium is $0, and then wanting to switch back to Original Medicare with a Medigap plan at 70. In most states, you’ll face underwriting at that point. If your health has changed, and in five years it often does, you could be denied or priced out.

    That doesn’t mean Medicare Advantage is always wrong. For someone in their 60s who’s healthy, doesn’t travel, and wants the simplicity of one card, it can work. But go in knowing that switching back isn’t always an option. The exit can be much harder than the entrance.

    How to Actually Submit Your Application

    Once you’ve chosen a plan type and compared quotes from multiple insurers, here’s how the application actually works:

    1. Get quotes from at least three to five companies. Because the coverage is identical across insurers for the same plan letter, you should be shopping primarily on price. Use a broker who represents multiple companies, or use a comparison site, but make sure you’re comparing apples to apples. Confirm the plan letter is the same.
    2. Choose your start date. Your Medigap policy should start the same day your Medicare Part B starts. If you’re turning 65 in August 2026, you want coverage starting August 1, 2026.
    3. Fill out the application. Most major insurers (Aetna, Cigna, Mutual of Omaha, UnitedHealthcare, Humana, Transamerica) offer online applications that take 15 to 20 minutes. You’ll need your Medicare number, Part B effective date, and basic personal information. During your OEP, health questions are either skipped or irrelevant to approval.
    4. Pay your first premium. Most companies will ask for your first month’s premium at application or shortly after. You can typically set up auto-pay from a bank account.
    5. Receive your policy documents. You’ll get a welcome packet and your policy within a week or two. Keep this with your Medicare card.

    One practical note: some people work through an independent insurance agent or broker, and there’s nothing wrong with that. A good broker costs you nothing (they’re paid by the insurer) and can help you compare pricing and answer questions. Just make sure they’re actually independent and not captive to one company.

    What to Do If You Missed Your Open Enrollment Window

    You still have options, they’re just narrower.

    First, check if your state has guaranteed issue rights. New York and Connecticut in particular have year-round open enrollment for Medigap, meaning you can apply anytime regardless of health. If you live there, apply now.

    Second, look for a Special Enrollment Period. If you’re losing employer coverage, losing coverage through a Medicare Advantage plan that’s leaving your area, or your current Medigap insurer goes bankrupt, you may qualify for guaranteed issue rights outside your original OEP.

    Third, if you truly don’t qualify for guaranteed issue and you’re in poor health, compare what a high-deductible Plan G would cost you versus a Medicare Advantage plan versus staying on Original Medicare with a solid supplemental savings account. None of these are perfect, but one of them will be better than the others depending on your situation.

    Bottom Line

    Apply for Medigap during your six-month Open Enrollment Period, starting the month you turn 65 and enroll in Part B. Don’t wait to see how healthy you stay. For most people, Plan G from a highly-rated insurer at the lowest available premium is the right call, and you should get at least three quotes before you sign anything.

    Frequently Asked Questions

    Can I apply for Medicare supplement insurance at any time of year?

    During your initial Open Enrollment Period, yes, any time within that six-month window. Outside of that window, it depends on your state. Most states allow insurers to deny you or charge more based on health history. States like New York and Connecticut are exceptions with year-round open enrollment regardless of health status.

    Do I need to apply for Medigap through Medicare’s website?

    No. Medicare itself doesn’t sell Medigap plans. You apply directly through a private insurance company like Mutual of Omaha, Aetna, Cigna, or others. Medicare.gov has a plan finder tool that can help you identify what’s available in your area, but the application goes to the insurer, not to Medicare.

    What happens if I’m denied for a Medigap plan?

    If you’re denied outside of a guaranteed issue period, you can try other insurers since each company sets its own underwriting standards. Some are more lenient than others. If you’re broadly uninsurable, look at Medicare Advantage plans, which must accept you regardless of health status during their enrollment periods.

    Can I have both Medicare Advantage and a Medigap plan?

    No. It’s illegal for insurers to sell you a Medigap plan if they know you’re enrolled in Medicare Advantage. The two systems don’t work together. If you want Medigap, you need to be on Original Medicare (Parts A and B), not a Medicare Advantage plan.

  • Medicare Supplement Open Enrollment Rules Explained

    What Is Medicare Supplement Open Enrollment and Why Does It Matter?

    Here’s the thing most people don’t find out until it’s too late: you only get one guaranteed window to buy a Medicare Supplement plan without anyone being able to turn you down. Miss it, and your options get a lot more complicated.

    Medicare Supplement insurance (also called Medigap) helps pay for costs that Original Medicare doesn’t cover, like copayments, coinsurance, and deductibles. These plans are sold by private insurance companies, and they can be a real financial lifesaver if you end up needing a lot of medical care. But the rules around when you can buy one are strict, and understanding them now could save you hundreds of dollars a year, or more.

    Your Medicare Supplement open enrollment period lasts for 6 months. It starts automatically on the first day of the month you’re both 65 or older and enrolled in Medicare Part B. You don’t have to do anything to trigger it. It just starts. And once those 6 months are up, they’re gone for good.

    During this window, insurance companies are required by federal law to sell you any Medigap plan they offer in your state. They can’t turn you down. They can’t charge you more because of a health condition you have. It doesn’t matter if you have diabetes, heart disease, or a history of cancer. You get the same price as someone in perfect health.

    What Happens If You Miss the Open Enrollment Window

    This is where a lot of people run into trouble. If you wait past your 6-month window to buy a Medigap plan, you lose those guaranteed protections.

    After your open enrollment period ends, insurance companies in most states can do what’s called medical underwriting. That means they can review your health history, ask detailed questions about your medical conditions, and either charge you a higher premium or flat-out deny your application. Some people with serious health conditions find they can’t get a Medigap plan at all outside of this window.

    Let’s say you turned 65 in March and signed up for Medicare Part B right away. Your 6-month open enrollment window runs from March through August. If you wait until November to buy a Medigap plan, the insurance company can look at your health history and decide whether to accept or reject you. That’s a real risk.

    The only exception is if you qualify for a Special Enrollment Period, which we’ll get to in a moment.

    A lot of people put off buying a supplement plan because they feel healthy right now and don’t think they need it. That’s understandable. But the whole point of insurance is to protect you before something goes wrong, not after.

    Special Enrollment Periods: Your Second Chance

    If you missed your open enrollment window, there are specific situations where the law gives you another guaranteed shot at buying a Medigap plan. These are called Special Enrollment Periods, or SEPs, and they come with the same protections as your original window.

    Here are the most common situations that qualify you for a Special Enrollment Period:

    • You had employer or union coverage and are now losing it. This is probably the most common reason people delay signing up for Medicare Part B in the first place. If you or your spouse were still working and covered by a group health plan, you may have waited. Once that coverage ends, you get a guaranteed SEP.
    • You were enrolled in a Medicare Advantage plan and are switching back to Original Medicare. In some cases, like if your plan leaves your area or commits fraud, you get a guaranteed right to buy Medigap.
    • You moved out of your plan’s service area and need new coverage.
    • Your Medigap insurance company went bankrupt or stopped offering coverage in your state.

    Each of these situations has its own specific rules about timing, so don’t wait too long after the triggering event. In most cases, you have 63 days to act once your other coverage ends.

    Some states have their own additional protections. For example, California, Connecticut, Maine, Massachusetts, Missouri, New York, and a handful of others require insurers to offer guaranteed issue Medigap plans more broadly, sometimes even on a year-round basis. It’s worth checking your state’s specific rules because federal law is just the floor, not the ceiling.

    Practical Tips for Making the Most of Your Enrollment Window

    You don’t have to figure all of this out alone, but you do have to be proactive about it.

    Start researching Medigap plans a few months before you turn 65. The 10 standardized plan types (labeled Plan A through Plan N) are the same from company to company in terms of benefits, so the main difference you’re shopping for is price and the company’s reputation for customer service. Premiums can vary by hundreds of dollars a year for the exact same coverage, just depending on which company you buy from.

    Here are a few practical steps to take:

    1. Sign up for Medicare Part B on time. This is what starts your open enrollment clock. If you’re not working with employer coverage, sign up when you first become eligible at 65 to avoid late penalties and to protect your Medigap window.
    2. Compare prices from multiple insurers. You can do this at Medicare.gov or by calling Medicare directly at 1-800-MEDICARE. A licensed insurance broker can also help you compare without any obligation.
    3. Don’t wait until the last month of your window. Give yourself time to review your options. Your 6 months feels long, but it goes faster than you’d expect.
    4. Check if your state offers extra protections. Some states allow you to switch Medigap plans with guaranteed issue rights each year on your birthday. California does this, and it’s a real advantage.

    One more thing worth knowing: if you’re under 65 and on Medicare because of a disability, the rules are different. Federal law doesn’t require insurers to sell you a Medigap plan, though some states do protect you. If this is your situation, contact your State Health Insurance Assistance Program (SHIP) for free guidance specific to your state.

    Frequently Asked Questions

    Can I be turned down for a Medicare Supplement plan during open enrollment?

    No. During your 6-month Medigap open enrollment period, insurance companies cannot deny you coverage or charge you higher premiums based on your health history. This federal protection is one of the most valuable rights you have as a new Medicare enrollee, so it’s worth using it wisely.

    What if I already have a Medigap plan and want to switch to a different one?

    Outside of your open enrollment period or a Special Enrollment Period, you generally have to go through medical underwriting to switch plans. That means you could be denied or charged more. A few states have birthday rules or other protections that let you switch annually, so check your state’s rules before assuming you’re stuck.

    Does my Medicare Supplement open enrollment period reset if I move to a new state?

    No, your original 6-month window doesn’t reset just because you move. However, if you’re moving to a state with stronger consumer protections, you might have more options than you’d expect. Contact your new state’s SHIP office or a licensed broker to understand what’s available to you after a move.