Medicare: The Complete 2026 Expert Review

Nearly 69 million Americans rely on Medicare, and more than half now choose a private Medicare Advantage plan over Original Medicare. Here’s what every part actually costs in 2026, how Original Medicare compares to Advantage, and how to choose without getting locked into the wrong plan.

What Medicare Actually Is

Medicare is the federal health insurance program for people age 65 and older, and for certain younger people with qualifying disabilities or end-stage renal disease. It’s administered entirely by the federal government through the Centers for Medicare & Medicaid Services (CMS) — unlike ACA Marketplace or employer plans, there’s no state regulator involved for Original Medicare itself, though Medigap and Medicare Advantage plans sold by private insurers are also subject to state insurance law.

Medicare has four parts: Part A (hospital insurance), Part B (outpatient/medical insurance) — together known as “Original Medicare” — Part C (Medicare Advantage, private plans that replace Original Medicare), and Part D (prescription drug coverage). A separate product, Medigap (Medicare Supplement), helps pay the deductibles and coinsurance that Original Medicare leaves behind — but it cannot be purchased alongside a Medicare Advantage plan. That’s the single most important structural decision in Medicare: you choose either Original Medicare + optional Medigap + Part D, or Medicare Advantage (which usually bundles Part D in) — not a mix of both paths.

This is different from every other category on this site. The ACA Marketplace and employer-sponsored insurance are built around annual metal-tier or plan-design choices with guaranteed issue; Medicare’s guaranteed-issue protections for Medigap are largely front-loaded into a single window around your 65th birthday, after which insurers can medically underwrite you in most states. For how Medicare fits alongside the other nine major U.S. coverage types, see our complete guide to the types of health insurance in America.

Who It’s For — and Who Should Look Elsewhere

• The employee turning 65 with no employer coverage. You should enroll in Part A and Part B during your 7-month Initial Enrollment Period around your 65th birthday to avoid permanent late-enrollment penalties.
• The retiree still covered by a spouse’s active employer plan. If the employer has 20+ employees, you may be able to delay Part B without penalty until that coverage ends — but confirm this with HR before assuming it applies.
• The person with a qualifying disability under 65. You’re generally eligible for Medicare after receiving Social Security Disability Insurance (SSDI) for 24 months, regardless of age.
• The budget-conscious retiree who wants predictable costs and extra benefits. Medicare Advantage often makes sense here — most plans include dental, vision, and hearing benefits and cap annual out-of-pocket spending, which Original Medicare alone does not.
• Who should think twice about Medicare Advantage: retirees who travel frequently, split time between two states, or strongly prefer an unrestricted choice of doctors and hospitals nationwide — Original Medicare plus Medigap is usually the better fit for that lifestyle, despite the higher monthly cost.

2026 Market Data & Pricing

The Part B premium jumped 9.7% for 2026, from $185.00 to $202.90/month — one of the largest year-over-year increases in the program’s history — while the Part B deductible rose from $257 to $283. On the hospital side, the Part A deductible per benefit period increased to $1,736 (up $60), with daily coinsurance of $434 for hospital days 61–90, $868 for lifetime reserve days, and $217 for skilled nursing facility days 21–100. Most beneficiaries pay no Part A premium at all since it’s earned through payroll taxes over a working career; those who must buy in pay $565/month (or $311/month with a 45% reduction for partial work history).

High earners pay more through IRMAA (Income-Related Monthly Adjustment Amount) surcharges on both Part B and Part D. For 2026, IRMAA begins at $109,000 in modified adjusted gross income for individuals ($218,000 for joint filers), based on your 2024 tax return, and affects roughly 8% of beneficiaries. The surcharged Part B premium ranges from $284.10 up to $689.90/month at the highest income bracket (above $500,000 individual / $750,000 joint), and the Part D surcharge ranges from $14.50 to $91.00/month on top of your plan’s premium.

On the Medicare Advantage side, average enrollee out-of-pocket limits for 2026 are $5,421 for in-network services (higher for PPOs at $6,592, lower for HMOs at $4,636) and $9,825 combined in/out-of-network — a real cap that Original Medicare alone doesn’t offer. About 75% of Medicare Advantage enrollees with drug coverage pay no premium beyond the standard Part B premium, and CMS projects the average MA plan premium will fall slightly to around $14/month for 2026.

How to Evaluate a Medicare Plan (Step-by-Step)

1. Decide Original Medicare vs. Medicare Advantage first. This is the foundational choice — almost everything else (Medigap eligibility, network flexibility, extra benefits) flows from it.
2. If choosing Original Medicare, price out Medigap immediately. Apply during your one-time 6-month Medigap open enrollment window (starting the month you’re 65+ and enrolled in Part B) to get guaranteed issue regardless of health history.
3. If choosing Medicare Advantage, check the provider network first. Confirm your specific doctors, specialists, and preferred hospital are in-network — more than half of MA enrollees are in HMO plans that generally don’t cover out-of-network care at all.
4. Compare the Part D formulary against your actual prescriptions, not just the premium — tiering and prior authorization rules vary significantly between plans, including within Medicare Advantage.
5. Check the plan’s Star Rating on Medicare.gov’s Plan Finder — CMS scores every Medicare Advantage and Part D plan annually on quality and member experience.
6. Model your worst-case year using the out-of-pocket maximum, not the premium — Original Medicare alone has no cap, which is exactly the gap Medigap or Medicare Advantage is designed to close.
7. Confirm extra benefits are real, not marketing. Dental, vision, and hearing benefits in Medicare Advantage plans often carry their own limited allowances — check the actual coverage amount, not just whether the benefit is “included.”
8. Reassess every Annual Enrollment Period. Plan formularies, networks, and premiums change year to year — a plan that fit you in 2025 may not be the best fit for 2026.

Key terms to know before you compare plans

• Original Medicare — Part A + Part B, run directly by the federal government, accepted by any provider nationwide that takes Medicare.
• Medicare Advantage (Part C) — private plans that replace Original Medicare, often bundling Part D and extra benefits, usually with a network.
• Medigap — standardized supplemental policies (Plans A–N) sold by private insurers that pay some or all of Original Medicare’s deductibles and coinsurance.
• IRMAA — the income-based surcharge added to Part B and Part D premiums for higher earners.
• Star Rating — CMS’s 1–5 star annual quality score for Medicare Advantage and Part D plans.
• Guaranteed issue — the right to buy a Medigap policy without medical underwriting, generally limited to your 6-month window at 65.

Red flags to watch for

• A Medicare Advantage plan with a “zero premium” pitch but no clear explanation of its out-of-pocket maximum or network restrictions.
• Any salesperson implying you can freely switch between Medicare Advantage and Medigap year to year with no medical underwriting — outside your initial window, that’s rarely true.
• A standalone Part D plan you haven’t reviewed since enrolling — formularies and pharmacy networks change annually, and yours may no longer be a Star-rated top performer.
• Confusion about whether your employer coverage lets you delay Part B — get this in writing from HR, since a wrong assumption here can trigger a permanent late-enrollment penalty.
• Skipping the Annual Enrollment Period entirely because “my plan renewed automatically” — auto-renewal doesn’t mean it’s still your best option.

How to Enroll

Enroll directly through the Social Security Administration for Part A/B, and compare Medicare Advantage, Part D, and Medigap plans through Medicare.gov’s Plan Finder or a licensed independent broker. Have on hand: your Medicare number (on your red, white, and blue card), your current prescription list with dosages, and — if applying for Medigap outside your guaranteed-issue window — be prepared for a full medical history review.

Cost-Saving Strategies

• Enroll on time. The single biggest cost-saving move is avoiding late-enrollment penalties — Part B adds 10% per full 12-month period you delayed without qualifying coverage, for life; Part D adds 1% of the national base premium ($38.99 for 2026) per month you went without creditable drug coverage, also for life.
• Check Extra Help and Medicare Savings Programs if your income is limited — these can substantially reduce or eliminate Part D and Part B costs for qualifying beneficiaries.
• Compare standalone PDP premiums every AEP. With average PDP premiums projected to fall to about $34.50/month for 2026 and plan availability shifting, last year’s best option may not still be competitive.
• Look at Part B premium give-back plans if considering Medicare Advantage — some plans reduce your Part B premium directly as a supplemental benefit, effectively lowering your monthly cost.
• If you’re near an IRMAA threshold, ask a tax professional whether a life-changing event (retirement, divorce, loss of income) qualifies you to request a reduction — CMS allows appeals in specific circumstances.

Pros and Cons

How It Interacts With Other Coverage

Medicare coordinates with employer-sponsored insurance based on employer size: at companies with 20 or more employees, the employer plan is typically primary and Medicare secondary if you’re still working past 65; at smaller employers, Medicare usually becomes primary, making Part B enrollment effectively mandatory to avoid coverage gaps. Medicare also coordinates with Medicaid for “dual-eligible” beneficiaries — low-income Medicare enrollees who also qualify for Medicaid, which can cover Medicare’s premiums, deductibles, and coinsurance. Medicare does not cover long-term custodial care, dental, vision, or hearing under Original Medicare (though many Medicare Advantage plans add limited versions of these), which is why long-term care insurance and standalone dental/vision policies remain relevant even after you’re on Medicare. And critically: Medigap and Medicare Advantage are mutually exclusive — you cannot legally be sold a Medigap policy while enrolled in a Medicare Advantage plan.

Frequently Asked Questions

Expert Take: The Bottom Line

Sources: CMS “2026 Medicare Parts A & B Premiums and Deductibles” (Nov. 14, 2025); Federal Register, Medicare Part B Monthly Actuarial Rates notice (Nov. 19, 2025); KFF “Medicare Advantage 2026 Spotlight” and “Medicare Advantage in 2026: Premiums, Out-of-Pocket Limits, Supplemental Benefits, and Prior Authorization”; KFF “Medicare Part D Enrollment, Premiums, and Cost Sharing in 2026”; Social Security Administration Medicare enrollment guidance. Figures reflect the most recent CMS-published 2026 data and can vary by plan and state — always confirm current numbers on Medicare.gov before enrolling.

This article is educational and general in nature — it isn’t personalized insurance, legal, or tax advice.