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Medicare can feel like alphabet soup. Between Part A, Part B, Part C, Part D, and Medigap, it's easy to see why so many people turning 65 — or helping a parent navigate the system — end up confused about what each piece actually covers, and whether Medicare Advantage is the money-saver it's often marketed as.

Here's a plain-English breakdown of how Medicare is structured in 2026, followed by an honest look at the Medicare Advantage question.

The Four Parts of Medicare, at a Glance

Part A

Hospital Insurance

Covers inpatient hospital stays, skilled nursing facility care, hospice, and home health. Most people don't pay a premium, having worked at least 10 years while paying Medicare taxes. The catch: the $1,736 deductible (2026) applies per benefit period, not per year — two hospitalizations with a gap in between can mean paying it twice.

Part B

Medical Insurance

Covers doctor visits, outpatient care, preventive services, and durable medical equipment. The standard 2026 premium is $202.90/month with a $283 annual deductible. After that, Original Medicare pays 80% of covered services — leaving you responsible for the remaining 20% with no annual out-of-pocket cap.

Part C

Medicare Advantage

Medicare delivered through a private insurer instead of directly through the government. Must cover everything Original Medicare covers, and usually bundles in Part D plus extras like dental, vision, and hearing — often for a low or $0 premium. Trade-off: HMO/PPO networks, referrals, and prior authorizations.

Part D

Prescription Drug Coverage

Standalone, or bundled into a Medicare Advantage plan (MAPD). Every plan has its own drug formulary and tiered cost-sharing, so the "best" plan depends entirely on which medications you take. Skipping enrollment without other creditable coverage triggers a permanent late-enrollment penalty.

The Uncapped 20% — and IRMAA

That uncapped 20% coinsurance under Part B is the single biggest reason people buy either a Medicare Supplement (Medigap) policy or a Medicare Advantage plan: Original Medicare alone leaves you exposed to unlimited cost-sharing if something serious happens.

Higher earners should also plan for IRMAA (Income-Related Monthly Adjustment Amount), a surcharge added to Part B and Part D premiums based on your tax return from two years prior. For 2026, IRMAA starts at $109,000 in income for individuals and $218,000 for couples filing jointly — with total Part B premiums reaching $689.90/month at the highest bracket. Anyone with a large Roth conversion, capital gain, or business sale on the horizon should think through the IRMAA impact before it happens, not after.

2026 Medicare Costs at a Glance

Part A deductible: $1,736 per benefit period

Part B premium: $202.90/month standard (up to $689.90 with IRMAA)

Part B deductible: $283/year

IRMAA threshold: begins at $109,000 (individual) / $218,000 (joint), based on 2024 income

Medigap: The Other Path

Instead of Medicare Advantage, some people pair Original Medicare with a Medicare Supplement (Medigap) policy, which pays some or all of the deductibles and coinsurance Original Medicare leaves behind. Medigap plans (labeled G, N, and others) let you see any provider who accepts Medicare, with no networks and no prior authorizations. The trade-off is cost: Medigap premiums run higher every month than most Medicare Advantage plans, and after your initial 6-month guaranteed-issue window closes, you may face medical underwriting to switch or enroll later.

So, Is Medicare Advantage a Good Idea?

There's no universal answer — anyone who tells you Medicare Advantage is simply "good" or "bad" is oversimplifying. It depends on your health, your finances, and what you value.

Medicare Advantage tends to make sense if you:

  • Are relatively healthy and want to keep monthly premiums low
  • Would use extra dental, vision, hearing, or fitness benefits
  • Are comfortable working within a network and getting prior authorizations for certain services
  • Want the built-in annual out-of-pocket maximum — a real financial safety net Original Medicare doesn't offer at all

Medicare Advantage is a harder sell if you:

  • Travel frequently and need coverage away from your plan's network
  • Have specialists or a hospital system you don't want to risk losing
  • Manage a complex chronic condition where prior-authorization delays could be costly
  • Place a high value on seeing any Medicare provider without a referral

In those cases, Original Medicare plus a Medigap policy and a standalone Part D plan — while more expensive month to month — often delivers more predictable, less restricted care.

"Medicare Advantage is a legitimate, often excellent option for the right person — but it's a decision that deserves a real comparison against Original Medicare plus Medigap, not just the premium on the brochure."

Watch the Trend Line

Medicare Advantage has become the majority choice: as of 2026, about 55% of the roughly 64 million people with Medicare Parts A and B — 35 million beneficiaries — are enrolled in an MA plan, with enrollment growing another 3% over the past year. Star ratings, which determine plan quality and bonus funding, have stabilized after several years of decline, with about 63.5% of MA members currently in a plan rated 4 stars or higher.

That said, with Star ratings under pressure and margins tightening industry-wide, some carriers are expected to scale back supplemental benefits or raise costs in the next plan year. A plan that looks generous today isn't guaranteed to look that way at your next Annual Enrollment Period (October 15 – December 7), so it's worth reviewing your plan every fall rather than assuming it will stay the same.

The Bottom Line

Medicare Advantage is a legitimate, often excellent option for the right person — but it deserves a real, side-by-side comparison against Original Medicare plus Medigap, based on your specific health needs, preferred doctors, and budget.

Have questions about which path makes sense for your situation? We're happy to walk through your options and compare the plans available in your area.