Ambulance arriving at a hospital entrance

Medicare Ambulance Coverage: What Part B Pays in 2026

Yes, Medicare covers ambulance rides, but only when the ride is medically necessary and goes to the nearest appropriate facility. Medicare Part B covers ground ambulance transportation, and after the Part B deductible you pay 20% of the Medicare-approved amount. In 2026 that deductible is $283. Air ambulance is covered only in narrow situations. Below, we walk through what qualifies, what you will owe, and the mistakes that lead to surprise bills.

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TL;DR

  • Original Medicare (Part B) covers medically necessary ground ambulance trips to or from a hospital, critical access hospital, rural emergency hospital, or skilled nursing facility.
  • You pay 20% of the Medicare-approved amount after the $283 Part B deductible (2026). There is no yearly out-of-pocket cap in Original Medicare unless you add supplemental coverage.
  • Medicare pays only to the nearest appropriate facility. Choosing a farther one for personal preference can leave you paying the difference.
  • Non-emergency rides, such as recurring dialysis trips, need strict proof of medical necessity. A doctor’s order alone is not a guarantee.
  • Air ambulance is covered only when ground transport is too slow or cannot reach you and rapid transport is medically necessary.

Table of Contents

What Medicare covers: the basics

Medicare treats an ambulance as a medical service, not a taxi. Part B (Medical Insurance) covers ambulance services to or from a hospital, critical access hospital, rural emergency hospital, or skilled nursing facility. That list matters. A ride from your home to a doctor’s office, a dentist, or a pharmacy is not on it.

The test Medicare applies is simple to state and harder to meet in practice: other transportation, such as a car or taxi, would endanger your health. Think chest pain, stroke symptoms, a serious fall with a suspected fracture, or severe bleeding. If a family member could safely drive you, Medicare is unlikely to call the ambulance necessary.

The federal rule behind this is 42 CFR 410.40. It also sets requirements for the ambulance vehicle and crew, which is why the company you ride with has to be an enrolled Medicare supplier. If you want a refresher on how Part B works in general, our Part B guide for 2026 covers premiums, the deductible and what else it pays for.

What you will pay

Here is the cost structure for Original Medicare in 2026:

Item Your cost
Part B annual deductible $283
After the deductible 20% of the Medicare-approved amount
Medicare-approved amount Set by Medicare’s fee schedule, not by the ambulance company’s bill

The deductible and coinsurance figures come from Medicare.gov. Two things make the math less friendly than it looks.

First, the 20% has no ceiling. As Medicare explains, there is no yearly limit on what you pay out of pocket unless you have supplemental coverage such as a Medigap policy. One long transport can mean a meaningful bill, and repeated trips add up.

Second, the 20% is calculated on the approved amount. If you are in the deductible phase, say it is early in the year and you have not used Part B yet, you pay the first $283 of approved charges yourself before the 20% starts.

A worked example

Suppose you have not met your deductible and the Medicare-approved amount for a ride is $1,000. You would pay the $283 deductible, then 20% of the remaining $717, which is $143.40. Your total would be $426.40, and Medicare would pay the rest. This is an illustration with a made-up approved amount, not a quote. Actual approved amounts vary by location and the level of service, and Medicare publishes its ambulance fee schedule for billers.

Breakdown of Medicare ambulance cost example

If you have already met the deductible that year, the same ride would cost you $200.

Emergency rides

In a true emergency, you should call 911. Medicare covers emergency ambulance services when your health is in serious danger and other transportation could endanger you. You do not need prior approval, and nobody expects you to weigh coverage rules while someone is having a heart attack.

What matters afterward is where the ambulance takes you.

The “nearest appropriate facility” rule

A common misconception is that any ride you call 911 for is fully covered. Medicare pays for transport to the nearest facility that can treat your condition. If you choose a hospital farther away, for example because your cardiologist practices there, Medicare will pay only what the trip to the nearest appropriate facility would have cost. You owe the difference.

“Appropriate” is about capability, not convenience. If the closest hospital has no stroke center or trauma unit and yours requires one, a farther hospital that does can be the nearest appropriate one. Paramedics often make that call on scene. When you can, ask the crew where they are taking you and why.

When Part A is involved

Most ambulance claims go through Part B. In some cases, such as when you are transferred between facilities as part of an inpatient stay, the transport may be bundled into the hospital’s payment instead. The relevant CMS guidance covers transport that is packaged into an institutional service. If a bill arrives that seems to double up, ask the hospital’s billing office which payer was charged.

Air ambulance

People search for air ambulance coverage because the bills are famously large. Medicare does cover it, but narrowly. In rare cases, when ground transport is too slow or cannot reach you, Medicare may cover an airplane or helicopter if immediate, rapid transport is medically necessary.

In practice that means remote areas, situations where traffic or terrain would delay care in a time-sensitive emergency, or a patient who needs a specialized facility that ground transport cannot reach in time. Convenience, preference, or a long drive alone do not qualify. The same nearest-appropriate-facility rule applies.

Air ambulance helicopter at a remote landing area

If you live in a rural area or travel often to remote places, ask yourself what happens if a flight is deemed not medically necessary. That is a question for your coverage review, and we return to it below.

Non-emergency ambulance transport

Non-emergency rides are where most denials happen. Medicare covers them only if your condition makes other transportation dangerous to your health. The regulation points to patients who are bed-confined, meaning they cannot get up, walk, or sit in a chair or wheelchair without assistance. Examples include a patient moving from a hospital to a skilled nursing facility who cannot sit upright safely.

A few points to know:

Dialysis and other repeat trips

If you need scheduled, repeated transport, for dialysis or wound care for instance, there is a safeguard. Under the Repetitive, Scheduled Non-Emergent Ambulance Transport (RSNAT) program, you or your ambulance company can request prior authorization. You can use it before the fourth trip in a 30-day period, and the decision usually arrives within 7 calendar days.

The process is voluntary, but it is worth using. Without it, you risk learning after the fact that Medicare denied the claim and the full charge is yours. CMS describes the model as one that asks for approval before the service is furnished and before a claim is submitted. Standard coverage rules still apply, so approval confirms that the trip meets them; it does not loosen them.

If your issue is getting to appointments rather than medical danger, an ambulance is the wrong tool. Our pages on medical transportation services and the Medicare Advantage transportation benefit explain the alternatives.

Ambulance coverage under different plan types

Your options depend on how you get Medicare.

Coverage How ambulance costs work
Original Medicare only Deductible, then 20% with no annual cap
Original Medicare + Medigap Many Medigap plans are designed to help with the 20% coinsurance; benefits differ by plan letter, so check the plan’s outline
Medicare Advantage Must cover what Original Medicare covers, but copays, networks and rules vary by plan

The Medigap and Advantage rows are general descriptions. Standardized Medigap plans differ in which Part B costs they pay, so confirm the letter and the carrier before assuming the 20% is gone. With Advantage, the ambulance copay is listed in each plan’s Evidence of Coverage, and a flat copay for an emergency ride can be lower or higher than 20% depending on the plan and the approved amount. You can read more in our Medicare Advantage guide and Medigap comparison for 2026.

Urgent care sometimes comes up in the same conversation, since people wonder whether to ride an ambulance or drive to a clinic. Our breakdown of urgent care versus the emergency room under Medicare helps with that decision, though in a real emergency you should call 911.

How to avoid a surprise ambulance bill

  1. Know your plan before you need it. Check whether you have Original Medicare, Medigap, or Advantage, and look up the ambulance cost-sharing line now.
  2. In an emergency, let the crew decide the destination. If you want a different hospital, ask whether it is the nearest appropriate one and understand you may owe the difference.
  3. For non-emergency trips, ask the ambulance company before the ride. Ask whether they expect Medicare to pay and whether you will be asked to sign an ABN.
  4. For recurring trips, request prior authorization. Ask the provider about the RSNAT process before the fourth trip in 30 days.
  5. Read every Medicare Summary Notice. If a claim was denied, you have appeal rights. The denial notice explains the steps and deadlines, and 1-800-MEDICARE can point you to the right place.
  6. Compare a bill to the approved amount. If a supplier billed you for more than Medicare’s 20% share, call and ask why before paying.

Our perspective

Ambulance coverage is a good example of why we put education before enrollment. Most people assume Medicare handles an emergency ride in full. It handles most of it, but the 20% with no cap, the nearest-facility rule, and the medical necessity test are details nobody explains until a bill shows up.

When we review coverage with someone, we do not start with a plan name. We ask how they would pay for a few bad weeks: an ambulance ride, an ER stay, a transfer to rehab. For many people, the answer shows a gap that a Medigap plan or a well-chosen Advantage plan can close, and for others the current plan is already the right fit. As independent agents, we are not tied to one carrier, so we can say so either way.

We also see people who are unhappy with the coverage they have, usually because no one ever checked it against their health and where they live. A rural address changes the air ambulance question. A dialysis schedule changes the transport question. Those facts should drive the plan, not the other way around.

— Paul

Reviewing your coverage with us

If you are turning 65, leaving employer coverage, or just not sure your current plan would hold up in an emergency, we can compare your options with you. We are an independent agency, and we help with Medicare Supplement plans, Medicare Advantage and Part D, with annual coverage checkups and year-round support. You can also read our own explainers on Medicare ambulance services coverage and whether Medicare pays for ambulance rides. To start a conversation, visit paulbinsurance.com.

FAQ

Does Medicare cover an ambulance ride to the hospital?

Yes, if the ride is medically necessary and goes to the nearest appropriate facility. Part B covers it after the $283 deductible in 2026, and you pay 20% of the Medicare-approved amount. Medicare covers rides to or from hospitals, critical access hospitals, rural emergency hospitals and skilled nursing facilities.

How much is an ambulance ride with Medicare?

You pay the deductible if you have not met it, then 20% of the Medicare-approved amount. The dollar figure depends on the approved amount for your trip, which varies by location and service level. A Medigap plan or a Medicare Advantage plan can change what you owe.

Does Medicare cover air ambulance transport?

Sometimes. Medicare may cover a helicopter or airplane when ground transport is too slow or cannot reach you and rapid transport is medically necessary. If a ground ambulance would have been enough, the flight is unlikely to qualify.

Will Medicare pay if my doctor orders an ambulance?

Not automatically. A doctor’s order supports the claim, but Medicare decides medical necessity based on your condition at the time of transport. For non-emergency trips, ask the ambulance company whether you will be asked to sign an ABN.

Does Medicare cover an ambulance to a hospital I prefer that is farther away?

Only up to the cost of going to the nearest appropriate facility. You are responsible for the difference. Tell the crew your preference, but ask whether the closer hospital can treat your condition.

Sources

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.

Sources

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