Lifestyle

7 Things Medicare Advantage Plans Hope You Never Compare

By Erica Coleman · September 19, 2026

Every year from October 15 through December 7, roughly 34 million Americans on Medicare Advantage face a choice most of them don’t want to think about: stay put, switch to a different plan, or leave Medicare Advantage entirely and go back to Original Medicare. Insurance companies count on most enrollees choosing the first option by default. They also count on most enrollees not knowing what’s actually at stake if they do want to switch.

Here’s what your Medicare Advantage plan hopes you never compare before this year’s window closes.

Your plan may have quietly stopped covering your doctor. Networks change every year, and hospital systems have increasingly walked away from Medicare Advantage contracts. Mayo Clinic, Mount Sinai, and other major systems have terminated MA contracts because reimbursement rates keep dropping. The result: roughly 2.9 million Medicare Advantage enrollees — about 1 in 10 — had to find new coverage for 2026 after their plans left the market, a February 2026 JAMA study found. Check whether your doctors and hospitals are still in-network for next year before the enrollment window closes.

Your prescription tier may have moved. Medicare Advantage plans reshuffle drug tiers every year. A drug that cost $10 last year may cost $75 next year if the plan moved it up a tier. The Annual Notice of Change that arrives in September lists exactly this — but most enrollees never open it. Check the 2027 formulary before you assume your prescriptions are still covered at the price you were paying.

Going back to Original Medicare is easy — but getting a Medigap policy to go with it may not be. This is the biggest trap in Medicare Advantage, and almost nobody explains it upfront. You can drop your MA plan and return to Original Medicare during the annual window. But without a Medigap supplemental policy, Original Medicare has no cap on your out-of-pocket costs. And in most states, Medigap insurers can deny you coverage or charge more based on your health history if you’re applying outside your initial guaranteed-issue window. Only Connecticut, Massachusetts, New York, and Maine offer year-round protection.

Five-star plans can be switched to any time of year. Medicare rates every MA plan on a five-star scale. If a plan in your area earns five stars, you can switch to it any time of year except the first week of December, AARP explains. In 2026, fewer than 5% of plans nationally qualify. Search Medicare’s Plan Finder with the star filter to see if any are available in your ZIP code.

Miss the enrollment window and you’re locked in for the year. The Annual Enrollment Period runs October 15 to December 7. During this window, you can switch MA plans, switch back to Original Medicare, add or drop Part D, and adjust drug coverage — all changes take effect January 1. Miss it, and you’re stuck with your 2027 coverage until the following January, barring qualifying life events.

The January-to-March window gives you exactly one do-over. From January 1 through March 31, current MA enrollees get one switch — either to a different Medicare Advantage plan or back to Original Medicare, with or without a Part D drug plan, Boomer Benefits explains. That change takes effect the first of the following month. You get one, so use it wisely.

Extra benefits are marketing, not entitlements. The dental, vision, hearing, and gym benefits Medicare Advantage plans advertise are real — but they vary widely, come with tight limits, and can disappear next year without warning. If your reason for staying is the free hearing aid benefit or the gym membership, verify it’s actually in the 2027 plan documents before making it your reason.

The window opens October 15. What you do — or don’t do — before December 7 will shape your health care costs for all of 2027.