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.

Medicare vs Medicaid: Clear Differences, Eligibility, and Coverage Explained

January 7, 2026

Choosing between Medicare and Medicaid can feel confusing, but it comes down to who qualifies and what each program pays for. Medicare mainly covers people 65 and older or those with certain disabilities, while Medicaid helps people with low income and can cover services Medicare does not.

Knowing this upfront helps you focus on the options that fit your situation.

You can get clear answers and one-on-one help from The Modern Medicare Agency. Our licensed agents talk with you directly, match Medicare plans to your needs, and aim to keep costs reasonable so you don’t pay for coverage you don’t need.

Understanding Medicare

Medicare helps pay for hospital care, doctor visits, and prescription drugs for people who meet specific age or health rules. You’ll learn who qualifies, how to sign up, what parts cover which services, and what costs to expect.

Eligibility Criteria

You qualify for Medicare if you are 65 or older and you or your spouse worked and paid Medicare taxes for at least 10 years. You may also qualify at any age if you have certain disabilities, end-stage renal disease (ESRD), or amyotrophic lateral sclerosis (ALS).

If you get Social Security or Railroad Retirement Board benefits, you usually get Part A and Part B automatically when eligible. Noncitizens with lawful presence must meet specific residency rules to enroll.

If you haven’t met work history requirements, you may still buy Part A by paying a premium. Check your exact status with Social Security before you enroll to avoid gaps in coverage.

Enrollment Process

Initial Enrollment runs from three months before your 65th birthday month through three months after it. If you miss that window, you can sign up during the General Enrollment Period (Jan 1–Mar 31), but coverage starts July 1 and you may owe late penalties.

If you still work and have employer insurance, you can delay Part B without penalty when certain conditions apply. You enroll in Part A and Part B through Social Security online, by phone, or at a local office.

For Part C (Medicare Advantage) and Part D (prescription drug plans), you choose private plans during Initial Enrollment or the Annual Election Period (Oct 15–Dec 7). Special Enrollment Periods may apply after major life events.

Coverage Options

Medicare has four main parts: Part A (hospital), Part B (medical services), Part C (Medicare Advantage), and Part D (prescription drugs). Part A covers inpatient hospital stays, skilled nursing facility care, and limited home health care.

Part B covers doctor visits, outpatient care, preventive services, and medical equipment. Medicare Advantage (Part C) bundles Part A and B and often Part D into private plans that may add vision, dental, or fitness benefits.

Part D plans help pay for prescription drugs; each plan has its own formulary. You can also buy Medigap (supplement) policies to cover Part A and B cost-sharing if you have Original Medicare instead of Advantage.

Costs and Premiums

Part A is usually premium-free if you or your spouse paid Medicare taxes for 40 quarters; otherwise you can buy it and pay a monthly premium. Part B has a standard monthly premium that most people pay, and higher earners pay an Income-Related Monthly Adjustment Amount (IRMAA).

Part C and Part D premiums vary by plan and region. Beyond premiums, expect deductibles, coinsurance, and copayments.

Original Medicare has a Part A deductible per hospital stay and a Part B deductible plus typically 20% coinsurance for many services. Medicare Advantage plans may have lower out-of-pocket costs for some services but can restrict provider choice and use network rules.

The Modern Medicare Agency can help you compare costs and plan rules. Our licensed agents speak with you one-on-one, find plans that match your needs, and do not charge extra fees.

Overview of Medicaid

Medicaid helps pay medical bills for people with low income, certain disabilities, pregnant people, and some seniors. Each state runs its own program within federal rules, so what you get and how you apply can change where you live.

Eligibility Requirements

Medicaid eligibility depends on income, family size, age, disability, pregnancy, and immigration status. Most adults qualify when their income is at or below a state-set percentage of the federal poverty level (FPL).

Pregnant people and children often have higher income limits than other adults. If you receive Supplemental Security Income (SSI) or certain disability benefits, you may automatically qualify.

States also run special categories for people who need long-term care or who are in nursing homes. Noncitizen eligibility varies; some lawful residents qualify after a waiting period.

You must meet your state’s residency and documentation rules. Expect to show proof of income, identity, and household members.

If your income changes, report it quickly—your coverage can start, stop, or shift based on updated information.

State Variations

States decide many details: covered services, income limits, asset rules, and provider payment rates. Some states expand Medicaid to all adults under a certain income level, while others keep stricter limits.

Coverage for things like dental care, vision, and transportation varies. For example, one state might include routine dental cleanings for adults while another covers only emergency dental care.

Long-term care and home health services also differ widely by state. Your state’s Medicaid website lists exact benefits and rules.

Compare state plans if you move or live near a border—your eligibility and covered services can change quickly.

Benefits and Services

Medicaid covers a broad range of services. Most plans include doctor visits, hospital care, lab tests, and prescription drugs.

For children, many states provide well-child checkups, vaccines, and dental care under the Early and Periodic Screening, Diagnostic, and Treatment (EPSDT) benefit. Medicaid often pays for long-term services that Medicare usually does not.

This includes nursing home care, personal care at home, and some in-home supports for daily living. Some states pay for transportation to medical appointments, physical therapy, and vision care.

Benefits can include care coordination and preventive programs. Check your state plan for limits, prior authorization rules, and whether you need a managed care plan or can use fee-for-service providers.

Application Process

You can apply for Medicaid through your state Medicaid office, online portal, or local social services office. Many states allow applications by phone or by mail.

You’ll need documents like proof of income, ID, Social Security numbers, and proof of residency. After you apply, the state usually has 45 days to decide; decisions for disability-based cases can take up to 90 days.

If you’re pregnant, many states make faster decisions. Expect interviews or follow-up requests for missing documents.

If denied, you have the right to appeal. Keep copies of all forms and written decisions.

The Modern Medicare Agency can connect you with licensed agents who explain state rules, help gather documents, and walk you through the application without charging extra fees. Our agents speak with you one-on-one to match plans to your needs.

Key Differences Between Medicare and Medicaid

Medicare mainly covers people 65 or older and some younger people with certain disabilities or conditions. Medicaid serves people and families with low income and can vary by state in what it pays and who qualifies.

Purpose and Target Population

Medicare serves adults 65+ and younger people with long-term disabilities or end-stage renal disease. It focuses on basic hospital and medical insurance, plus optional drug and private-plan choices.

You qualify for Medicare through age or specific health conditions, not income. Medicaid serves low-income children, pregnant people, adults, seniors, and people with disabilities.

States set income limits and some groups like children get broader coverage. You may qualify for both Medicare and Medicaid if you have low income and meet Medicare rules.

Funding Sources

Medicare gets most funding from federal payroll taxes, premiums that beneficiaries pay, and general federal revenue. Medicare Part A is mainly payroll-tax funded; Parts B and D rely on premiums and government funds.

These federal funds set standard national rules for what Medicare covers. Medicaid is funded jointly by federal and state governments.

The federal government matches state spending at rates that vary by state and by program. States add money and sometimes expand benefits beyond federal minimums, so what Medicaid covers and how generous it is can differ where you live.

Administration

Medicare is run by the federal Centers for Medicare & Medicaid Services (CMS). Because it’s federal, Medicare rules and covered services stay the same across all states.

You enroll through federal channels and can choose Original Medicare or a private Medicare Advantage plan approved by CMS. Medicaid is run by each state within federal rules.

States administer eligibility, enrollment, and many benefits. This leads to different application processes, covered services, and provider networks depending on your state.

Cost Responsibilities

With Medicare, you often pay premiums, deductibles, and coinsurance. Part A may be premium-free if you or your spouse paid Medicare taxes long enough; Parts B and D usually have monthly premiums.

You can limit out-of-pocket costs with Medigap (supplement) plans or Medicare Advantage, but those have extra costs. Medicaid generally has low or no premiums and minimal cost-sharing for eligible people.

States may charge small copays or premiums in some cases, but Medicaid aims to reduce financial barriers to care. If you have both Medicare and Medicaid, Medicaid often pays Medicare premiums and cost-sharing you cannot afford.

How Medicare and Medicaid Work Together

Medicare and Medicaid can combine to lower your health costs, cover services Medicare does not, and give you choices about plans and providers.

Dual Eligibility

If you qualify for both programs, you are “dual eligible.” Dual eligibility generally happens when you are 65 or older (or under 65 with a qualifying disability) and your income and assets meet your state’s Medicaid limits.

States set Medicaid financial rules, so qualification can vary by state and by program within a state. There are categories like Full Duals (Medicaid pays most Medicare costs) and Partial Duals (Medicaid helps with some Medicare costs).

You may also enroll in special plans for dual eligibles, such as Medicare Savings Programs or Dual-Eligible Special Needs Plans (D‑SNPs). Ask a licensed agent to check your status and options based on your state rules.

Coordination of Benefits

Medicare pays first for covered services when you have both programs. Medicaid steps in to pay costs that Medicare does not cover, such as Medicare premiums, deductibles, and certain long-term care services.

For services Medicare doesn’t cover at all, Medicaid may pay directly if the service is part of your state’s Medicaid plan. If you join a Medicare Advantage or Part D plan, coordination can change.

Some dual-eligible plans bundle Medicare and Medicaid benefits. Keep all insurance cards and give them to providers so billing goes to the right payer first.

Your licensed agent can review plan choices and explain how billing will work for your care.

Impact on Out-of-Pocket Costs

Having both programs usually lowers your out-of-pocket costs significantly. Medicaid can pay Medicare Part B and Part A premiums for many dual eligibles, and it can cover copays and coinsurance that Medicare would otherwise charge you.

This reduces what you pay at the doctor, hospital, and pharmacy. If you have a Medicare Savings Program or qualify for Extra Help, your Part D prescription costs can drop or disappear.

Remember: exact savings depend on your state’s rules and the specific plan you choose.

Changing Coverage and Special Circumstances

You may qualify for both Medicare and Medicaid at the same time, switch from one to the other, or change plans when life events happen. Each path has rules about eligibility, coverage, and timing that affect your costs and provider choices.

Qualifying for Both Programs

If you meet Medicare age or disability rules and your income and assets meet your state’s Medicaid limits, you can be “dual eligible.” Dual eligibility often reduces your out‑of‑pocket costs.

Medicaid may pay Medicare premiums, deductibles, and copays that Medicare does not cover. Dual eligibles get different levels of help.

Full duals get more Medicaid benefits and stronger financial help than partial duals. Your exact benefits depend on your state’s Medicaid rules, so check local limits and covered services.

The Modern Medicare Agency helps you confirm dual eligibility. Our licensed agents talk with you one on one, check your income and asset criteria, and explain which costs Medicaid may cover.

They do this without charging extra fees.

Transitioning Between Programs

Moving from Medicaid-only to Medicare, or vice versa, changes who pays for what. When you turn 65 or qualify for Medicare due to disability, Medicare becomes primary for most services.

Medicaid can then fill gaps left by Medicare, like nursing home care or long‑term supports. If you lose Medicaid because your income rises, you may need to enroll in a Medicare Part D plan or a Medicare Advantage plan quickly to avoid gaps in drug or medical coverage.

If you gain Medicaid later, tell both programs so benefits coordinate and you don’t miss cost assistance. The Modern Medicare Agency guides you through timing and paperwork when coverage shifts.

Our agents review your current benefits, estimate likely cost changes, and recommend plans that keep your access to providers steady.

Special Enrollment Periods

Special Enrollment Periods (SEPs) let you join, switch, or drop Medicare plans outside the yearly Open Enrollment window. Common triggers include moving, losing other insurance, or getting full Medicaid or Extra Help.

The SEP rules and how often you can change depend on the event. For dual eligibles and those with Extra Help, starting in 2025 you may change coverage monthly, giving you more flexibility.

Other SEPs may limit choices to certain plan types or require changes within set timeframes. Always confirm the SEP type and deadline before you act.

The Modern Medicare Agency can identify which SEP applies to your situation and assist with timely enrollment calls and forms. Our agents explain start dates, coverage limits, and how a change will affect your providers and costs.

Additional Resources for Navigating Medicare and Medicaid

You will find government programs, local services, and professional help that answer eligibility questions, guide enrollment, and lower your out‑of‑pocket costs. Use these resources to compare plan options, check state rules, and get one‑on‑one help.

Government Assistance Programs

Federal resources provide official information and tools you can trust. Visit the Medicare website to compare Part A, B, C, and D benefits, check enrollment periods, and use the plan finder to see drug coverage and estimated costs.

For Medicaid, check your state’s Medicaid office online for income limits, covered services like long‑term care, and how to apply. You can also learn about programs that reduce Medicare costs: Medicare Savings Programs help pay premiums, and Extra Help lowers prescription drug costs.

If you qualify for both Medicare and Medicaid (dual eligible), you can get coordinated benefits — your state Medicaid office or Medicare’s resources will explain how claims and cost‑sharing work. Keep printed ID numbers, recent income statements, and current medication lists handy when you apply.

That speeds processing and helps you choose the right plans.

State and Local Support

State agencies and local offices translate federal rules into actions you can take. Your state Medicaid office sets specific eligibility tests and covered services; call them or use their website to find your exact limits and application forms.

Local Area Agencies on Aging offer counseling on long‑term services, home care options, and how Medicaid may cover nursing home care. County or city health departments and community clinics can help you enroll, verify documents, and schedule in‑person appointments.

Some states run Medicaid managed care plans — contact the plan offices for provider networks and prior‑authorization rules. Keep a list of local phone numbers and office hours so you can get timely help.

Professional Guidance

You don’t have to navigate choices alone. Licensed agents can review your health needs, current prescriptions, and budget to match you with Medicare plans that fit.

The Modern Medicare Agency offers real licensed agents who speak with you one‑on‑one. They help compare coverage options and explain costs without charging extra fees.

Ask a licensed agent to run a side‑by‑side cost estimate for plans you’re considering. Get written summaries of premiums, deductibles, drug tiers, and provider networks.

Use that information when you call state Medicaid offices or enroll online. This helps you make confident, informed choices.

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.