Prescription containers arranged for cost comparison

2026 U.S. Part D: How the $615 Deductible Changes Your Copays

The Part D deductible is what you pay in full before your plan chips in; the copay or coinsurance is what you pay after that point, and only for covered drugs. In 2026, the most any plan can charge as a deductible is $615, and once your out-of-pocket drug spending hits $2,100, you owe nothing more for covered Part D drugs the rest of the year. If you qualify for Extra Help, the deductible often disappears entirely.

TL;DR:

  • Most plans in 2026 cap the Part D deductible at $615, which resets annually and may be lower or waived if you qualify for Extra Help.
  • Coinsurance can be ten times more expensive than copays for the same drug, especially in higher tiers, affecting out-of-pocket costs significantly.
  • Reaching the $2,100 out-of-pocket threshold moves you into catastrophic coverage, where you pay nothing for covered drugs for the rest of the year.
  • Many plans now include coinsurance at higher tiers, shifting costs more to beneficiaries, with fewer plans offering no deductible options.
  • Checking formulary details, tier placement, and potential discounts before enrollment ensures accurate cost estimates and plan suitability.
Paulbinsurance
Understand Your Medicare Drug Options
Paulbinsurance helps Medicare consumers understand Part D, Medicare Advantage, supplements, and related coverage before making decisions.

Explore your Medicare options

Table of Contents

What a Part D Deductible Actually Is

The deductible is the amount you pay out of your own pocket for covered prescriptions before your Part D plan starts sharing the cost. Medicare caps this figure at $615 for 2026, but plenty of plans set it lower, and some carry no deductible at all. Until you hit that number, you’re paying the plan’s negotiated price for your drugs in full, not a discounted rate.

A few things about how this plays out in real life:

  • Some plans exempt certain drugs, usually preferred generics, from the deductible so you pay a copay from your very first fill.
  • The deductible resets every January 1, regardless of how close you came to meeting it the year before.
  • A single 90-day supply of a maintenance drug can burn through the whole deductible in one transaction.

Say your monthly cholesterol medication costs $80 at your plan’s negotiated rate. Fill one costs you the full $80. Fill two costs $80. By fill eight, you’ve paid $615 and moved past the deductible into the next phase of coverage, sometimes called initial coverage.

Copay vs Coinsurance: The Real Difference

A copay is a flat dollar amount, like $10 for a generic, regardless of what that drug actually costs the plan. Coinsurance is a percentage of the drug’s price, so your bill moves with the price tag. Both are forms of cost sharing that generally kick in only after you’ve cleared the deductible, when one applies.

Plans tend to follow a predictable pattern:

  1. Tier 1 (preferred generics) usually carries a small fixed copay, often $0 to $10.
  2. Tier 2 (generics) and Tier 3 (preferred brands) typically use slightly higher copays, sometimes $20 to $50.
  3. Tier 4 and 5 (non-preferred and specialty drugs) almost always switch to coinsurance, frequently 25% to 33% of the cost.

Here’s why that tier structure matters for your wallet. A $5 copay on a $200 drug costs you $5, full stop. But 25% coinsurance on that same $200 drug costs you $50, ten times more for the identical prescription. That gap is exactly why checking whether your medications fall under copay or coinsurance tiers matters more than comparing premiums alone.

The Three Coverage Stages and Where Cost Sharing Changes

Every Part D plan moves through the same three stages, and your cost sharing looks different in each one.

  • Deductible stage: You pay 100% of the covered drug’s cost until you hit your plan’s deductible, which is capped at $615 in 2026.
  • Initial coverage stage: You pay a copay or coinsurance, and the plan covers the rest, until your total out-of-pocket spending reaches the 2026 threshold of $2,100.
  • Catastrophic coverage: Once you reach that $2,100 cap, you owe $0 for covered Part D drugs for the remainder of the calendar year.

What counts toward that $2,100 figure, often called true out-of-pocket costs or TrOOP, includes your deductible payments, your copays and coinsurance, and amounts paid on your behalf by Extra Help or most manufacturer discounts on brand-name drugs. It does not include your monthly premium.

How fast you reach the cap depends entirely on your prescriptions. Someone on a couple of generic maintenance drugs might never get past the initial coverage stage in a given year. Someone starting an expensive specialty biologic could blow through the deductible and the entire $2,100 cap within one or two fills, landing in catastrophic coverage by February. That’s part of why understanding the catastrophic coverage cap matters before you pick a plan, not after you’re already sick.

2026 Part D coverage stages and spending caps

How Extra Help Changes the Math

Extra Help, also called the Low-Income Subsidy, rewrites the cost-sharing rules for eligible beneficiaries. Depending on your income and asset level, you may pay no deductible at all and face only minimal copays for the rest of the year.

Under full Extra Help, copays typically run around $5.10 for generics and $12.65 for brand-name drugs per fill, figures that stay flat even for expensive specialty medications. Some enrollees pay $0 for benchmark plans with no premium at all.

  • Eligibility is based on income and resource limits that adjust annually.
  • You can apply through Social Security or your state Medicaid office.
  • Even partial Extra Help can meaningfully lower what you’d otherwise pay toward the deductible.

If your income is limited, checking Extra Help eligibility before you enroll in a Part D plan can change which plan actually makes sense for you.

A Checklist for Comparing Deductible vs Copay Tradeoffs

Premiums are the easiest number to compare and the least useful one on its own. Run through this list before picking a plan:

  1. Monthly premium, including any Part D late enrollment penalty that might apply to you.
  2. Deductible amount, and whether any tiers are exempt from it.
  3. Copay or coinsurance amount for each tier that includes your actual medications.
  4. Specialty tier coinsurance percentage, since that’s where costs spike fastest.
  5. Formulary placement, confirming your specific drugs are covered and at what tier.
  6. Pharmacy network and mail-order pricing, since preferred pharmacies often charge less.

A plan with a rock-bottom premium and a $615 deductible can end up costing you far more over a year than a plan with a higher premium and no deductible, especially if you take even one brand-name maintenance drug. The tradeoff only favors the low-premium plan if you take few or no medications.

Ask a plan representative or agent these six questions: What’s my deductible? Is my specific drug covered, and at what tier? Is that tier a copay or coinsurance? What’s my expected annual cost, not just my premium? Does my pharmacy count as preferred? What happens if my drug’s tier changes mid-year?

Pro Tip: If you’re starting an expensive new medication, ask your pharmacist about filling a shorter supply first. Medicare allows less than a full month’s fill in some cases, and paying proportionally less can soften the deductible hit while you confirm the drug works for you.

Why You Can Trust This Breakdown

Paul Barrett has worked directly with Medicare beneficiaries since 2007, and Paulbinsurance built its approach around education first, not pressure. The agency’s independent agents walk consumers through Part D, Medicare Advantage, and Medigap side by side, rather than pushing whatever pays the largest commission.

For plan-specific verification, always check the Medicare Plan Finder, read the plan’s formulary directly, and call the plan to confirm your drugs and tier placement before you enroll.

Which Drugs Skip the Deductible Entirely

Not every prescription is subject to the deductible, and knowing which ones aren’t can change how you plan your first few months of coverage. Many plans voluntarily exclude certain preferred generic drugs from the deductible phase, letting you pay a small copay from day one instead of the full negotiated price.

Vaccines covered under Part D, including the shingles vaccine, generally aren’t subject to any cost sharing at all under current rules, deductible included. Insulin products are a special case: thanks to the insulin cost cap, covered insulin can’t cost you more than $35 for a month’s supply, and that cap applies whether or not you’ve met your deductible. Some plans also carve out select chronic-condition drugs, like certain diabetes or high-blood-pressure medications, from the deductible as a way to encourage medication adherence.

None of these exclusions are guaranteed across every plan. Whether a drug skips the deductible depends entirely on that specific plan’s formulary design, which is exactly why two plans covering the identical drug can produce very different first-quarter costs. The only way to know for certain is to check the plan’s Summary of Benefits or formulary document before you enroll, not after your first prescription rings up at full price.

Part D Plans vs Medicare Advantage Drug Coverage

Standalone Part D plans and Medicare Advantage plans that include drug coverage (MA-PDs) follow the same basic federal rules: the same $615 maximum deductible, the same $2,100 out-of-pocket cap, and the same three coverage stages. Where they differ is in how aggressively they use each cost-sharing tool.

KFF’s analysis of 2026 plan data found that 82% of MA-PD enrollees are now in plans that charge a deductible, and coinsurance has become more common at higher tiers across both plan types. That’s a meaningful shift because MA-PDs have historically leaned on $0 deductibles as a selling point bundled with medical coverage. Fewer plans are doing that now.

The practical difference for you usually comes down to bundling. An MA-PD wraps your drug coverage into the same plan as your doctor visits and hospital stays, often with a single combined provider network. A standalone Part D plan pairs with Original Medicare or a Medicare Supplement policy, giving you more flexibility on which doctors you see but requiring you to manage drug coverage separately. Neither structure exempts you from the deductible and copay mechanics described above. The real comparison point is the specific plan’s deductible amount, tier copays, and formulary, not which broad category it falls into.

Practical Ways to Lower Your Out-of-Pocket Costs

A few habits consistently save real money across a plan year. First, request generic substitutions whenever your doctor allows it; generics almost always sit on the lowest copay tier, while brand-name equivalents often trigger coinsurance. Second, use mail-order pharmacy options when your plan offers preferred pricing there, since a 90-day mail-order fill is frequently cheaper per dose than three separate retail fills.

Third, time expensive fills strategically. If you know a costly medication is coming, filling it early in the year gets you through the deductible faster, after which every other prescription that month benefits from copay or coinsurance pricing instead of the full price. Fourth, check your Explanation of Benefits regularly. Drug tiers and formularies change mid-year more often than beneficiaries expect, and a drug that was Tier 2 in January can shift to Tier 3 by June.

Finally, revisit your plan every fall during open enrollment rather than assuming this year’s plan still fits. KFF’s data shows deductibles and coinsurance use both climbed in 2026, which means a plan that was your best deal last year might not be this year. Comparing your total expected annual cost, not just the premium, against strategies for lowering prescription costs each fall is the single habit that saves beneficiaries the most money over time.

Practical Ways to Lower Your Out-of-Pocket Costs — overview diagram

What the 2026 Redesign Means for Your Wallet

The $2,100 cap is a genuine win: no more open-ended coinsurance once you hit that number. But the tradeoff is more plans leaning on deductibles and coinsurance to fund that predictability, exactly what KFF’s 2026 data shows happening across the market. Estimate your full-year drug cost, not just the premium, and get an agent’s help if you’re on specialty medications.

— Paul

Get Help Comparing Part D Plans With Paulbinsurance

Paulbinsurance is the alternative to guessing your way through a formulary spreadsheet alone. We compare deductibles, copay tiers, and coinsurance across plans side by side against the actual drugs you take, then explain the tradeoffs in plain language before you commit to anything.

Paulbinsurance

If your income is limited, we’ll also walk you through whether you qualify for Extra Help, since that alone can wipe out a $615 deductible. Our support doesn’t stop at enrollment either. We check in annually to make sure your plan still fits as formularies and pricing shift year to year. Visit our Medicare Part D plan comparison page to start a free, no-pressure review of your current coverage against what’s actually available in your area for 2026.

Sources

Figures and definitions in this article come from Medicare’s official cost breakdown, the Medicare prescription drug coverage guide (PDF), KFF’s 2026 Part D cost-sharing analysis, and AARP’s Part D overview.

This article is general information, not a substitute for advice from a qualified financial advisor. Consult a qualified financial professional about your own circumstances before acting on anything here.

FAQ

Does Medicare Part D Have Copays?

Yes, most Part D plans use copays for lower drug tiers, usually generics, and switch to coinsurance for higher tiers like specialty drugs. Whether you owe a copay from your first fill depends on if your plan waives the deductible for that tier.

Does Medicare Pay 100% After the Deductible?

No, Medicare and your plan share costs after the deductible through copays or coinsurance until you hit the 2026 out-of-pocket cap of $2,100. Only after reaching that cap do you pay $0 for the rest of the year.

What Do Most People Pay for Medicare Part D?

Costs vary widely based on which drugs you take and which plan you choose, since premiums, deductibles up to $615, and copay or coinsurance amounts all differ by plan in 2026. The only reliable way to know your own cost is comparing plans against your specific medication list through Paulbinsurance or the Medicare Plan Finder.

Do I Still Have to Pay a Copay if I Reach My Deductible?

Yes, meeting your deductible moves you into the initial coverage stage, where you pay a copay or coinsurance instead of the full price. Those payments continue until your total out-of-pocket spending reaches the $2,100 cap, after which covered drugs cost $0.

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

Related Post

Scroll to Top

Request a Callback with
Paul Barrett

Fill out the form below, and we'll call you within 24 hours.