What is Medicare Advantage?

Medicare Advantage, also called Part C, is offered by private insurance companies approved by Medicare. It usually combines Part A, Part B, and often Part D prescription drug coverage.

What is the difference between Original Medicare and Medicare Advantage?

Original Medicare is run by the federal government and lets you use any provider that accepts Medicare. Medicare Advantage is offered by private insurers and often uses provider networks.

What is Medicare Supplement or Medigap?

Medicare Supplement, also called Medigap, works with Original Medicare to help reduce out-of-pocket costs. It can help cover certain copays, coinsurance, and deductibles.

Does Medigap include prescription drug coverage?

Medigap plans sold today do not include prescription drug coverage. Most people need a separate Medicare Part D plan for medications.

What is Medicare Part D?

Medicare Part D is prescription drug coverage offered by private insurance companies approved by Medicare. It helps cover medication costs based on the plan’s formulary.

When is the Medicare Annual Enrollment Period?

The Medicare Annual Enrollment Period usually runs from October 15 to December 7 each year. During this time, many people can review or change Medicare Advantage and Part D plans.

Can I switch Medicare Advantage plans later?

Yes, but timing matters. Most people can switch during Annual Enrollment, Medicare Advantage Open Enrollment, or a qualifying Special Enrollment Period.

What is the difference between HMO and PPO Medicare Advantage plans?

HMO plans usually require in-network care and may need referrals. PPO plans generally offer more provider flexibility but may cost more for out-of-network care.

Do Medicare Advantage plans require prior authorization?

Many Medicare Advantage plans require prior authorization for certain services. This can include imaging, surgeries, skilled nursing care, or other covered treatments.

Do Medicare Advantage plans have an out-of-pocket limit?

Yes, Medicare Advantage plans include an annual maximum out-of-pocket limit for covered medical services. Original Medicare does not include this protection by itself.

Why do Medicare plans change every year?

Plans may update premiums, copays, drug formularies, provider networks, and benefits each year. Reviewing your plan annually helps avoid unexpected changes.

How can I find a Medicare plan that includes my doctor?

You should check the plan’s provider network before enrolling. A local Medicare agent can help confirm whether your doctors and hospitals are included.

IRMAA is an income-related adjustment that can increase Medicare Part B and Part D premiums. It is based on your reported income from prior tax years.

What is a Special Enrollment Period?

A Special Enrollment Period allows certain Medicare changes outside normal enrollment windows. Qualifying events may include moving, losing coverage, or plan changes.

Why work with a local Medicare agent?

A local Medicare agent can help compare plan options, explain networks, and review coverage based on your area. This can make Medicare decisions easier to understand.

Tax Deductions for Medicare Premiums: A Clear Guide to Eligibility and Savings

January 17, 2026

You can often deduct Medicare premiums as a medical expense if you itemize and your total medical costs exceed 7.5% of your adjusted gross income. This could lower your tax bill if your health expenses add up.

If you are self-employed, you may be able to deduct all your Medicare premiums as an adjustment to income. This can reduce your taxable income even if you don’t itemize.

This post will walk you through which parts of Medicare qualify and how to claim the deduction. It also covers common pitfalls and recent rule changes that might affect your eligibility.

For personalized help, turn to The Modern Medicare Agency. Our licensed agents talk with you one-on-one to match Medicare packages to your needs without hidden fees.

Understanding Medicare Premiums

Medicare premiums are the regular payments you make for Medicare coverage. They vary by Medicare part, your income, and how you get your coverage.

What Are Medicare Premiums?

Medicare premiums are monthly fees that pay for your Medicare parts. Part A usually has no premium if you or your spouse paid Medicare taxes for 10 years.

Part B has a monthly premium that most people pay; it covers doctor visits and outpatient care. Part D covers prescription drugs and also charges a monthly premium.

If you choose a Medicare Advantage plan (Part C), you often pay a separate plan premium in addition to any Part B premium.

Premium amounts can change each year. Higher-income beneficiaries may pay an Income-Related Monthly Adjustment Amount (IRMAA) that raises Part B and Part D costs.

Types of Medicare Premiums

Part A: Usually premium-free if you meet work history rules; otherwise a monthly charge applies.
Part B: Standard monthly premium set by Medicare; higher earners pay extra through IRMAA.
Part D: Base premium varies by plan; IRMAA can increase it for higher incomes.
Part C (Medicare Advantage): Plans may charge a monthly premium on top of Part B; benefits and costs vary by plan.

You may also see premiums collected from your Social Security check, directly billed, or included in plan payments. Some plans offer reduced or $0 premiums but may trade off with higher copays or narrower provider networks.

Who Pays Medicare Premiums?

You pay Part B and Part D premiums if you enroll in those parts. Part A premiums apply only if you don’t qualify for premium-free Part A based on work history.

If you have a Medicare Advantage plan, you pay its premium plus your Part B premium unless the plan covers Part B. If you get Social Security benefits, premiums are often deducted from your benefit check.

If not, Medicare sends a bill you must pay directly. High earners pay IRMAA based on your modified adjusted gross income (MAGI) from two years prior.

The Modern Medicare Agency can help you compare premium costs and plan details. Our licensed agents are real people you can speak with one-on-one.

Eligibility for Tax Deductions on Medicare Premiums

You can often deduct Medicare premiums if you meet specific rules about medical expenses, income, and filing status. The following sections explain who can claim the deduction, how income affects it, and how your filing choice changes what you can deduct.

Who Qualifies for Medicare Premium Tax Deductions?

You may deduct Medicare premiums as part of your medical expenses if you itemize deductions on Schedule A of Form 1040. This includes standard Part B and Part D premiums, and some Part A premiums if you paid them because you did not qualify for premium-free Part A.

If you are self-employed, you can often deduct 100% of your Medicare premiums on Schedule 1 as an adjustment to income. This lets you claim the deduction even if you don’t itemize.

Keep records such as Form SSA-1099, insurer statements, and bank or Social Security statements showing premium payments. Only unreimbursed premiums count; employer-covered or HSA-paid amounts do not qualify.

If someone else (like a spouse) paid your premiums, that person may claim them if they itemize and meet the IRS rules.

Income Limits for Deductibility

You can deduct medical expenses, including Medicare premiums, only to the extent they exceed 7.5% of your adjusted gross income (AGI) for the tax year. For example, if your AGI is $50,000, the first $3,750 (7.5% of AGI) of medical expenses is not deductible.

Only the portion above that threshold counts on Schedule A. High-income beneficiaries may also face higher Part B and Part D premiums due to IRMAA (income-related monthly adjustment amounts).

Those extra premium charges remain deductible as medical expenses, but they still follow the 7.5% AGI rule. Keep pay stubs and IRS notices showing your income-driven premium amounts to support the deduction.

Filing Status and Its Impact

Your filing status changes how the 7.5% AGI threshold applies and who claims the deduction. Married couples filing jointly combine their medical expenses and AGI, which can make it easier to exceed the threshold.

If married filing separately, each spouse must meet the 7.5% test on their own AGI, which often reduces the deductible amount. If someone else claims you as a dependent, that person may be able to deduct your medical expenses instead of you.

Survivors or estates follow special rules for expenses in the year of death. Choosing to itemize vs. take the standard deduction should depend on whether your total itemized deductions, including medical expenses over the AGI limit, exceed the standard deduction for your filing status.

How to Deduct Medicare Premiums on Your Taxes

You can often deduct Medicare premiums if you meet IRS rules. The key steps are how to report them, whether you must itemize, and what records to keep.

Reporting Medicare Premiums as Medical Expenses

You report Medicare premiums as part of your unreimbursed medical expenses on Schedule A (Form 1040). Include premiums for Part B, Part D, and any required Part A premiums you paid.

Do not include premiums your employer paid or amounts your plan reimbursed. Only the portion of total medical expenses that exceeds 7.5% of your adjusted gross income (AGI) is deductible.

Calculate your AGI, total medical costs, then subtract 7.5% of AGI. Enter the deductible amount on Schedule A, line for medical expenses.

If you’re self-employed, you may instead use the self-employed health insurance deduction on Schedule 1. This can let you deduct premiums above-the-line without itemizing.

Itemized Deductions Versus Standard Deduction

You can deduct Medicare premiums only if you itemize on Schedule A unless you qualify for the self-employed health insurance deduction. Compare the itemized total to the standard deduction for your filing status before choosing to itemize.

Make a simple checklist: add all eligible medical costs (premiums, copays, prescriptions), subtract 7.5% of AGI, then compare the result to the standard deduction. If your itemized deductions exceed the standard deduction, itemize.

If not, take the standard deduction and consider whether self-employment rules apply.

Required Documentation

Keep proof of premiums, payments, and reimbursements. Useful documents include Form 1095-A if applicable, bank or credit card statements showing payments, Medicare Summary Notices, and insurance billing statements.

Keep one file with: dates of payment, payee name, amounts, and notes on who paid (you or employer). Retain records for at least three years after filing, or longer if the IRS requests them.

If an auditor asks, present clear, dated documentation that separates premiums you paid from employer-paid amounts.

Medicare Parts and Their Deductibility

Medicare premiums can sometimes be deducted, but the rules differ by plan type and your tax situation. You can often count Part B, Part C, and Part D premiums as medical expenses if you itemize, and self-employed people have an extra way to claim premiums.

Tax Treatment of Medicare Part A Premiums

Medicare Part A is usually premium-free if you or your spouse worked and paid Medicare taxes for 10 years. If you must buy Part A because you lack enough work credits, those premiums can be a qualified medical expense.

You can include Part A premiums in medical expenses only if you itemize deductions on Schedule A and your total medical expenses exceed 7.5% of your adjusted gross income (AGI). Self-employed people who pay Part A and other Medicare premiums may deduct them above the line on Form 1040 as the self-employed health insurance deduction.

Keep records of any Part A premiums you pay, including receipts or bank statements, to support the deduction.

Tax Deductibility of Medicare Part B Premiums

Medicare Part B premiums are commonly paid monthly by many beneficiaries. These premiums count as qualified medical expenses when you itemize, subject to the 7.5% of AGI threshold for deducting medical costs.

If an employer pays your Part B premium through a tax-free plan, you typically cannot deduct it. If you’re self-employed, you can usually deduct Part B premiums on Form 1040 as part of the self-employed health insurance deduction.

Save Form SSA-1099, billing statements, and any W-2 details showing premiums included in income when preparing your return.

Deducting Medicare Part C (Medicare Advantage) Premiums

Medicare Part C, or Medicare Advantage, bundles Part A and B benefits and often adds an extra monthly premium. Those extra premiums count as medical expenses if you itemize on Schedule A and exceed the 7.5% of AGI limit.

Employer-paid premiums for Medicare Advantage may not be deductible by you if they are paid pre-tax or by the employer. Self-employed individuals generally can deduct Part C premiums under the self-employed health insurance rule if they qualify.

Keep plan invoices and payment records, and compare total medical costs to 7.5% of your AGI before claiming the deduction.

Special Considerations for the Self-Employed

Self-employed people can often deduct Medicare premiums, but limits and rules matter. You must check net self-employment income, whether you had access to employer coverage, and which Medicare parts you paid for.

Self-Employed Health Insurance Deduction

You can deduct premiums you pay for Medicare Parts A, B, C (Medicare Advantage), and D under the self-employed health insurance deduction. Enter the total on Schedule 1, Form 1040, but the deduction cannot exceed your net earnings from self-employment.

If your business shows a $7,000 net profit but you paid $8,000 in premiums, your deduction caps at $7,000. Include premiums you paid for your spouse and dependents in the total.

Premiums taken directly from Social Security are still deductible if they were paid by you. Keep clear records: invoices, bank statements, and SSA deductions help support your claim if audited.

Eligibility Requirements for Self-Employed Individuals

To qualify, you must have net profit from a trade or business reported on Schedule C, F, or K-1 showing self-employment earnings. You cannot claim the deduction if you were eligible for employer-sponsored health coverage any month, even if you chose not to take it.

You must show the premiums were paid and not already counted as a business expense on Form 1040 Schedule C. If you run a partnership or S-corp, special rules apply for owners and spouses; consult a tax advisor if your business payroll or health-plan setup is complex.

You may be able to deduct extra premiums and many out-of-pocket costs if you itemize and your medical expenses exceed 7.5% of your adjusted gross income (AGI). Keep good records like receipts, statements, and Form SSA-1099 if Social Security withheld premiums.

Deducting Medicare Supplement (Medigap) Premiums

Medigap (Medicare Supplement) premiums count as medical insurance premiums for tax purposes when you itemize deductions. Include monthly premiums you pay to private insurers for plans that fill gaps in Original Medicare, as well as any extra riders you bought.

If your employer pays some premiums or they are paid pre-tax through a cafeteria plan, that portion is not deductible. Track total premiums for the year and add them to other qualifying medical expenses.

Only the amount of total medical expenses that exceeds 7.5% of your AGI becomes deductible. Keep statements from your Medigap insurer and proof of payment to support the deduction.

Out-of-Pocket Medical Expense Deductions

You can deduct many out-of-pocket costs related to Medicare care if you itemize. Examples include copayments, coinsurance, dental care, vision care, durable medical equipment, and prescription drugs not reimbursed by insurance.

Transportation to medical appointments can qualify if you keep mileage logs or receipts for fares. Add these expenses to your premiums and other medical costs, then subtract 7.5% of your AGI to find the deductible amount.

Save receipts, pharmacy printouts, and billing statements. If you need help sorting eligible expenses or collecting documents, contact The Modern Medicare Agency.

Common Mistakes to Avoid When Claiming Deductions

Mistakes usually come from math errors and missing paperwork. Small oversights can cost you a deduction or trigger IRS questions.

Incorrectly Calculating Medical Expenses

You must total the right items and apply the 7.5% of adjusted gross income (AGI) threshold correctly. Only include qualified medical costs: Medicare Part B and D premiums, Medicare Advantage premiums, and any out-of-pocket medical payments.

Do not count premiums already paid with pre-tax dollars through an employer plan. Keep separate totals for premiums and other medical expenses before comparing to 7.5% of your AGI.

If your AGI is $40,000, that threshold is $3,000; only expenses above that number count. Double-check math, use calendar-year totals, and avoid rounding too early.

Small addition mistakes can drop you below the threshold and lose the entire deduction.

Failing to Keep Adequate Records

You need receipts, statements, and Form 1095-A/1095-B if applicable. Save Medicare statements, bank or credit card records showing payments, and any Explanation of Benefits that shows your share of costs.

Store copies for at least three years after filing in case the IRS asks for proof. Organize records by category: premiums, co-pays, prescriptions, and medical equipment.

Use a folder or digital scan system and label each file with dates and amounts. If you work with an agent, choose The Modern Medicare Agency — our licensed agents will help you gather the right documents and explain what counts, one on one, without extra fees.

Recent Changes and Updates Affecting Medicare Premium Deductions

Rules about which Medicare costs count as deductible and how they’re reported have changed recently. Legislative actions altered tax treatment for some premiums, and the IRS updated filing rules and documentation requirements.

Legislative Updates

Congress passed changes that affect what Medicare premiums you can deduct on Schedule A. Starting in 2025, Part B and eligible Part A premiums remain deductible as medical expenses when you itemize.

The new law also clarified treatment of certain Part D and Medigap payments. If your Part D or Medicare Advantage plan charges are billed through a private insurer, they now more clearly qualify as deductible medical expenses when you pay them out of pocket.

The law kept the 7.5% of adjusted gross income (AGI) threshold for medical deductions. That means you only deduct medical costs — including qualifying Medicare premiums — that exceed 7.5% of your AGI.

If you claimed the new above-the-line deduction in certain tax years, check with an agent about whether that affects your 2025 filing.

IRS Policy Changes

The IRS updated guidance on forms and proof you need to claim Medicare premium deductions. If Medicare premiums were paid via Social Security, use Form SSA‑1099 or a Social Security statement showing premiums withheld.

For private-plan premiums, retain insurer billing statements or bank records that show the payments. The IRS also stressed consistent recordkeeping.

Keep annual statements, receipts, and proof of payment for at least three years after you file. If an auditor asks, clear documentation speeds resolution.

Consulting a Tax Professional

You may need help deciding whether your Medicare premiums qualify as a deductible medical expense. A tax professional can review your records, check your adjusted gross income (AGI), and tell you if itemizing will help you save more than taking the standard deduction.

Ask a professional about documentation you need, like Form SSA-1099 or insurer statements for Medicare Advantage, Part D, and Medigap. They can help you track expenses and make sure you meet the 7.5% of AGI rule for medical deductions.

The Modern Medicare Agency offers licensed agents who can speak with you one-on-one.

Our agents explain how Medicare costs interact with tax rules and identify plans that match your needs without extra fees.

Bring a clear list of premiums, receipts, and any Social Security statements to your appointment. A tax pro can spot deductible items you might miss and suggest records to keep for audits.

If you are self-employed or have unusual income sources, a specialist can show how those affect your ability to deduct premiums. You’ll get personalized advice that follows current tax law.

Consider asking The Modern Medicare Agency to connect you with an agent before you meet your tax preparer. This helps ensure the Medicare plan details are clear, so your tax advisor can give accurate guidance.

What Is Medicare Part B and What Does It Actually Cover?

The complete guide to Medicare’s medical insurance — every service it covers, exactly what it costs in 2026, how it works with group insurance and VA benefits, and the excess charges most people have never heard of until they get a surprise bill.

The Short Answer

Medicare Part B is medical insurance — it covers doctor visits, outpatient care, preventive services, durable medical equipment, and more. Unlike Part A, Part B is not premium-free for anyone: everyone pays a monthly premium (202.90in2026formostpeople),anannualdeductible(283), and 20% coinsurance on most covered services, with no yearly cap on that 20% under Original Medicare alone. Whether you need to enroll at 65, and whether delaying is safe, depends heavily on your employment status and your employer’s size — getting this wrong is one of the most consequential and permanent mistakes in all of Medicare.

Key Takeaways

Part B is never premium-free — everyone pays a monthly premium, and higher earners pay significantly more through IRMAA.
The 20% coinsurance under Original Medicare alone has no yearly cap — this is the single biggest financial risk in Medicare, and it’s the reason Medigap and Medicare Advantage exist.
Whether you can safely delay Part B without a penalty depends on your employer’s size: 20+ employees generally allows delay; fewer than 20 generally does not.
Missing your enrollment window triggers a permanent 10% penalty for every 12-month period you went without coverage.
Veterans can and generally should enroll in Part B even with VA benefits, since Medicare and VA coverage don’t coordinate — each only pays for care received within its own system.
“Excess charges” from non-participating providers can add up to 15% on top of what Medicare approves, and only some Medigap plans protect you from them.

What Part B Actually Covers

While Part A handles hospital room and board, Part B is the half of Original Medicare that covers medical care and most services delivered outside a hospital admission — doctor visits, outpatient procedures, and ongoing medical needs.

What’s covered

Doctor visits — primary care and specialists
Outpatient surgeries and procedures
Diagnostic lab work, X-rays, and MRIs
Emergency room visits
Ambulance services
Outpatient mental health care
Physical, occupational, and speech therapy
Chemotherapy and radiation received in an outpatient clinic
Durable Medical Equipment (DME) — wheelchairs, oxygen equipment, blood sugar monitors, walkers, and similar equipment
Ambulatory surgical center services

Preventive services: the part Medicare gets genuinely right

Most preventive services are covered at 100%, with no deductible and no copay, as long as your provider accepts Medicare assignment. This includes:

Your one-time “Welcome to Medicare” wellness visit, available within your first 12 months on Part B
Annual wellness visits after that
Flu shots and most other recommended vaccines
Mammograms
Colonoscopies and other cancer screenings
Diabetes and cardiovascular screenings
Many other screenings recommended by the U.S. Preventive Services Task Force

Paul’s Honest Take: This is one of the most underused parts of Medicare, full stop. I’ve had clients who paid for a private physical every year out of habit and never realized their annual wellness visit through Medicare was completely free. If you haven’t used your Welcome to Medicare visit or your annual wellness visit, that’s real value sitting on the table.

What’s NOT covered

Routine dental care — cleanings, fillings, dentures, extractions
Routine vision exams and eyeglasses
Hearing aids (though diagnostic hearing tests ordered by a doctor may be covered)
Long-term custodial nursing home care — help with daily living activities, as opposed to short-term skilled or medical care
Routine prescription drugs you pick up at a retail pharmacy — that’s Part D’s job, not Part B’s
Cosmetic surgery, unless medically necessary (such as reconstruction after an accident or mastectomy)
Most care received outside the United States, with very limited exceptions
Routine foot care, such as nail trimming, in the absence of a qualifying medical condition
Acupuncture, except for a narrow, specific chronic low back pain benefit
Concierge medicine fees and membership-style charges some practices add on top of standard care
Long-term care insurance-style services, including most home-based personal care that isn’t tied to a skilled medical need

Paul’s Honest Take: The dental and vision exclusions are the ones that surprise people most, especially since they’re such routine parts of healthcare for most adults. This is exactly why so many Medicare Advantage plans build dental, vision, and hearing benefits into their coverage — Original Medicare was simply never designed to include them, and that gap doesn’t go away on its own.

What Part B Costs in 2026

Part B has three separate cost components, and understanding all three matters:

Cost Component	2026 Amount
Standard monthly premium	$202.90
Annual deductible	$283
Coinsurance on most covered services	20%

The premium is deducted automatically from your Social Security check if you’re already collecting benefits. If you’re not yet collecting Social Security, you’ll receive a bill, typically every three months.

The deductible works differently than Part A’s — it’s a straightforward annual figure. You pay the first $283 of Medicare-approved outpatient costs each calendar year, and then Medicare’s cost-sharing kicks in.

The coinsurance is where the real risk lives. After your deductible is met, Medicare pays 80% of the Medicare-approved amount for most covered services, and you’re responsible for the remaining 20%. There is no yearly cap on this 20% under Original Medicare alone. If you have a $100,000 course of cancer treatment, your 20% share is $20,000 — unless you have a Medigap policy or Medicare Advantage plan absorbing that cost.

Paul’s Honest Take: I put this in bold because it’s genuinely the single most important number in this entire guide. That uncapped 20% is the whole reason Medigap and Medicare Advantage exist as products in the first place. Original Medicare by itself was never designed to protect you from a truly expensive year — it was designed to cover 80% of it and leave the rest to you.

IRMAA: What Higher Earners Actually Pay

If your income is above certain thresholds, you’ll pay more for Part B through the Income-Related Monthly Adjustment Amount (IRMAA) — based on your tax return from two years prior. For 2026, that means your 2024 income determines your premium tier.

2024 Income (Individual)	2024 Income (Married, Joint)	Total Part B / Month
$109,000 or less	$218,000 or less	$202.90
$109,001 – $137,000	$218,001 – $274,000	$284.10
$137,001 – $171,000	$274,001 – $342,000	$405.80
$171,001 – $205,000	$342,001 – $410,000	$527.50
$205,001 – $499,999	$410,001 – $749,999	$649.20
$500,000 and above	$750,000 and above	$689.90

At the top tier, you’re paying more than three times the standard premium. If your income has recently dropped — retirement, the loss of a spouse, or certain other life-changing events — you can appeal your IRMAA determination using Form SSA-44.

Do You Have to Enroll? And What Happens If You Don’t?

Technically, Part B is optional — Medicare won’t force you into it. But opting out without a valid alternative is genuinely risky, because of how the penalty structure works.

If you don’t sign up during your Initial Enrollment Period (the 7-month window around your 65th birthday) and you don’t have qualifying employer coverage, you’ll face a permanent 10% penalty added to your premium for every full 12-month period you went without Part B. That penalty doesn’t expire — you pay it for as long as you have Part B, which for most people means for the rest of your life.

Example: If you delayed enrollment by 24 full months without a valid exception, you’d pay an extra 20% on top of the standard $202.90 premium in 2026 — roughly $40.58 more, every month, permanently.

How Part B Works with Group Insurance

Just like Part A, whether you can safely delay Part B without penalty comes down to one specific number: how many employees your company has.

Companies with 20 or more employees: If you or your spouse are actively working and covered by a genuine group health plan, your workplace insurance is primary, and you can legally delay Part B without any penalty. When that employment or coverage eventually ends, you get an 8-month Special Enrollment Period to enroll in Part B penalty-free.

Companies with fewer than 20 employees: Medicare automatically becomes your primary insurer at 65, regardless of your employment status. You need to enroll in Part B right on schedule. If you don’t, your small employer’s plan can legally refuse to pay claims that Medicare should have covered first — potentially leaving you responsible for the full cost.

Paul’s Honest Take: I say this in nearly every guide I write, because it’s genuinely one of the costliest misunderstandings I encounter: “I have good coverage at work” and “I’m protected from Medicare’s enrollment deadlines” are two completely different statements, and whether the second one is true depends entirely on your employer’s size — not how generous the coverage feels. Confirm the actual employee count before you decide to delay anything.

Retiree Coverage Is Not the Same as Active Employer Coverage

This is a distinction that catches a genuinely large number of people off guard: the “20 or more employees” exception only applies to active employment. If you retire and your former employer offers you retiree health benefits — sometimes a genuinely good, comprehensive plan — that coverage does not create a Special Enrollment Period the way active group coverage does, and it does not exempt you from enrolling in Part B on time.

Paul’s Honest Take: I’ve seen this mistake more than once, and it’s an especially painful one because it happens to people who did everything right during their working years. Someone retires with a strong retiree health plan from a large employer, assumes it works the same way their active coverage did, and delays Part B — only to find out later that retiree coverage was never a valid reason to delay in the first place. The moment you stop actively working, that clock starts, regardless of how good your retiree plan looks on paper. If you’re retiring and keeping employer retiree benefits, treat enrolling in Part B as something to handle right on schedule, not something retiree coverage lets you postpone.

Why You Need Both Part A and Part B for Medigap or Medicare Advantage

Here’s a foundational requirement worth understanding clearly, since it shapes every other coverage decision in Medicare: you must be enrolled in both Part A and Part B before you can buy a Medigap policy or enroll in a Medicare Advantage plan. Neither product exists as a standalone substitute for Original Medicare — both are built specifically to work alongside it.

Medigap fills the cost-sharing gaps left by Original Medicare (Parts A and B) — it has nothing to fill in if you’re not enrolled in both parts to begin with.
Medicare Advantage legally must provide at least the same coverage as Parts A and B combined, which is only possible because you’re required to be enrolled in both before a Medicare Advantage carrier can enroll you.

Paul’s Honest Take: This surprises people who assume they can somehow “skip” Part B and go straight into a Medicare Advantage plan to avoid the extra premium. It doesn’t work that way — Part B enrollment, and its premium, is a prerequisite either way, whether you end up on Original Medicare with Medigap or on a Medicare Advantage plan. There’s no path through Medicare that avoids the Part B premium once you’re actually using the system.

Does Medicare Work If You’re a Veteran?

Yes — and if you have VA health benefits, understanding how the two systems relate is genuinely important, because they work differently than most people assume.

Medicare and VA benefits do not coordinate. These are two entirely separate systems that each pay only for care received within their own network. Medicare doesn’t pay for care you receive at a VA facility, and VA benefits don’t pay for care you receive from a non-VA doctor or hospital. You, the veteran, choose which system to use each time you seek care.

Here’s the critical point: having VA benefits does not exempt you from Medicare’s enrollment deadlines. VA coverage is not considered a qualifying reason to delay Part B without penalty. If you don’t enroll in Part B during your Initial Enrollment Period and you’re relying solely on VA benefits, you can still trigger the permanent late enrollment penalty.

Why the VA itself recommends enrolling in Medicare anyway:

It gives you access to civilian doctors and hospitals outside the VA system
VA healthcare funding depends on annual Congressional appropriations, which isn’t guaranteed to remain stable
If VA authorizes only part of your needed care at a non-VA facility, Medicare can help cover the rest
Having both gives you meaningfully more flexibility and security than relying on either system alone

Paul’s Honest Take: This is one of the most common misconceptions I run into with veterans specifically, and it’s an expensive one to get wrong. Good VA coverage feels like it should be enough, and it might genuinely handle most of your care — but it doesn’t protect you from the Part B enrollment clock the way employer coverage from a large company can. The VA itself actively encourages enrolling in Medicare Parts A and B for exactly this reason. If you have VA benefits and are approaching 65, this is worth a direct conversation before you assume you’re covered.

Veterans who enroll in Part B can also purchase a Medigap policy, which can be particularly valuable if you use non-VA providers regularly — though if you primarily rely on VA facilities for most of your care, the value of an added Medigap policy may be more limited, and worth weighing carefully.

How Long Does It Actually Take to Get Part B Approved?

This is one of the most practical, and most overlooked, pieces of planning — especially if you’re leaving a job after 65 and coordinating your Part B start date around the end of your employer coverage. Applying isn’t instant, and the timeline depends heavily on which enrollment window you’re using.

Enrollment Situation	Typical Processing Time	When Coverage Actually Starts
Initial Enrollment Period (around 65)	2–4 weeks, sometimes up to 6	1st of your birthday month (if applied in the 3 months before) or 1st of the month after you apply (if applied during or after your birthday month)
Special Enrollment Period (leaving employer coverage)	4–8 weeks, sometimes longer	1st of the month after your application is submitted
General Enrollment Period (Jan 1–Mar 31, missed window)	4–6 weeks	1st of the month after you apply

Why the Special Enrollment Period takes longer: applying after leaving employer coverage requires two forms, not one — Form CMS-40B (the actual Part B application) and Form CMS-L564 (Request for Employment Information), which your employer needs to complete to verify you had qualifying coverage. Social Security has to manually review both, which is exactly why this route consistently takes longer than a standard Initial Enrollment Period application.

Paul’s Honest Take: This timeline question comes up constantly with clients who are retiring or leaving a job after 65, and it deserves real attention — not just because of the penalty risk we’ve already covered, but because a slow approval can leave you with an actual gap in coverage if you time it too tightly. My standard advice: start this process at least 2 to 3 months before you need Part B to actually begin, not the week your employer coverage ends. If your former employer is slow to complete their portion of Form CMS-L564, that alone can hold up the entire application — so it’s worth following up with your HR or benefits department directly rather than assuming it’s been submitted.

Practical tips to avoid delays

Apply online through SSA.gov whenever possible. It’s consistently the fastest method — mailed or faxed forms are more prone to getting lost or delayed.
If you’re on a Special Enrollment Period, submit Form CMS-L564 alongside Form CMS-40B, not separately. They need to arrive together, and one incomplete form can stall the whole application.
Expect a short intake lag even with online applications. It can take several business days for an online submission to actually appear on a local Social Security agent’s screen — don’t panic if you call shortly after applying and they say they don’t see it yet.
Once approved, you don’t have to wait for your physical card. Your Medicare Beneficiary Identifier typically appears in your online Social Security or Medicare.gov account within a day or two of approval, and you can print a temporary card from there — the physical card generally arrives by mail within about 30 days.

Excess Charges: The Cost Almost Nobody Knows to Ask About

Here’s a detail that surprises even people who’ve been on Medicare for years: not every doctor who accepts Medicare agrees to accept Medicare’s approved amount as full payment.

Providers fall into three categories:

Participating providers accept Medicare assignment, meaning they agree to accept the Medicare-approved amount as payment in full. This covers the vast majority of providers — roughly 98% of doctors nationally.
Non-participating providers still accept Medicare patients but haven’t agreed to accept the standard rate. They can charge an excess charge of up to 15% above the Medicare-approved amount.
Opted-out providers have left the Medicare system entirely and can charge whatever they want under a private contract — Medicare pays nothing at all for care from these providers, except in emergencies.

How excess charges actually work: if the Medicare-approved amount for a service is $300 and you see a non-participating provider, they can legally charge up to an additional $45 (15%) on top, for a total bill of $345 — and that excess amount doesn’t count toward your Part B deductible.

Eight states currently prohibit or limit excess charges entirely: Connecticut, Massachusetts, Minnesota, New York, Ohio, Pennsylvania, Rhode Island, and Vermont. If you live in one of these states, you’re generally shielded from excess charges from providers within your state — though you could still face them if you receive care from a non-participating provider elsewhere.

Paul’s Honest Take: This is exactly why Medigap Plan G matters so much for people who want maximum flexibility. Plan G covers excess charges in full — Plan N does not. If you’re the kind of person who wants the freedom to see any doctor without worrying about billing surprises, that distinction is worth understanding clearly before you pick between the two. And regardless of which plan you choose, it’s always worth asking a new provider directly whether they accept Medicare assignment before your first appointment.

The HSA Rule: Part B Closes the Door Too

If you’re hoping to keep contributing to a Health Savings Account, know this clearly: enrolling in Part B — or any part of Medicare — ends your ability to make new HSA contributions. This isn’t unique to Part B; it applies the moment you enroll in Medicare in any form, including premium-free Part A.

If keeping your HSA active matters to you, the only way to legally delay both Part A and Part B is through qualifying employer coverage — which, as covered above, generally requires an employer with 20 or more employees. And because Part A enrollment can be backdated up to 6 months once you do enroll, it’s smart to stop HSA contributions 6 months before you plan to sign up for Medicare or file for Social Security, whichever comes first.

Frequently Asked Questions

Is there a cap on what I’ll pay for Part B services in a year? Not under Original Medicare alone — the 20% coinsurance has no yearly limit. A Medigap policy or Medicare Advantage plan is what actually caps your exposure.

What happens if I don’t sign up for Part B on time? You’ll generally face a permanent 10% penalty on your premium for every 12-month period you went without coverage, unless you qualify for a Special Enrollment Period through active employer coverage.

Do I need Part B if I have good coverage through a small employer? Almost certainly yes. If your employer has fewer than 20 employees, Medicare becomes your primary insurer at 65 regardless of your job coverage, and not enrolling can leave you exposed to unpaid claims and a lifelong penalty.

Do veterans need Medicare Part B if they have VA benefits? Generally, yes. Medicare and VA benefits don’t coordinate — each only pays for care within its own system — and VA coverage doesn’t exempt you from Medicare’s enrollment deadlines or penalties.

What is a Part B excess charge? An additional charge, up to 15% above the Medicare-approved amount, that a non-participating provider can legally bill you. It doesn’t count toward your deductible, and only Medigap Plan G (among current plans) covers it in full.

Can I keep contributing to my HSA if I enroll in Part B? No. Enrolling in any part of Medicare, including Part B, ends your HSA contribution eligibility going forward.

How long does it take to get approved for Part B? It depends on the enrollment window. Initial Enrollment Period applications typically process in 2–4 weeks. Special Enrollment Period applications, used when leaving employer coverage, generally take 4–8 weeks since Social Security must manually verify your prior coverage using Form CMS-L564. Start the process at least 2–3 months before you need coverage to begin, especially when coordinating around a job ending.

The Bottom Line

Part B is the half of Medicare that covers your everyday medical care — and it’s also where the real financial exposure of Original Medicare lives, thanks to that uncapped 20% coinsurance. Whether you should enroll at 65, whether you can safely delay, and how much of that exposure you’re carrying all depend on details specific to your situation: your employer’s size, your income, your VA status, and which doctors you actually see.

If you want help sorting out exactly how Part B applies to your specific circumstances — or want to understand how Medigap or Medicare Advantage could close that uncapped coinsurance gap — that’s exactly the conversation I have with clients every day, at no cost to you.

Call 631-358-5793 or visit paulbinsurance.com to set up a time to talk it through.

Paul Barrett, CMIP, is the founder of The Modern Medicare Agency, based in Melville, NY, and has spent 18+ years exclusively helping people navigate Medicare — never life insurance, never annuities, just Medicare. He’s licensed in 37 states, represents more than 40 carriers, and has personally helped over 5,000 clients choose coverage that actually fits their lives.

Figures current as of 2026 and sourced from CMS, Medicare.gov, and the Social Security Administration. Individual circumstances vary, especially around employer coverage, VA benefits, and income-based premiums — always verify your specific situation before making enrollment decisions.