What Changes in Medicare Advantage for 2027 — And Why AEP Is Your Only Window

Every fall, Medicare Advantage plans quietly update their terms. Premiums shift. Drug formularies change. Doctors move in and out of networks. For most seniors, these changes go unnoticed — until a surprise bill arrives in January.

That's why the Annual Enrollment Period (AEP), which runs from October 15 to December 7, exists. It's your one guaranteed window each year to review your coverage and make a change if something no longer fits.

What Can Change in a Medicare Advantage Plan?

Insurance carriers are required to notify you of changes by October 1 each year. But those notices — often buried in a thick packet of mail — can be easy to miss. Here's what typically changes:

Monthly premiums. Your plan's premium can go up or down. Some plans in the Buffalo area have seen premiums rise by $20–$50 per month with little fanfare.

Drug formularies. The list of covered medications (and what tier they fall on) can change annually. A drug that was covered at a low copay last year may move to a higher tier — or be removed entirely.

In-network providers. Your primary care doctor, specialist, or preferred hospital may no longer be in-network for 2027. This is one of the most common surprises seniors face.

Extra benefits. Dental, vision, hearing, and fitness benefits vary widely between plans and can change year to year. Some plans add benefits; others quietly remove them.

Out-of-pocket maximums. The cap on what you'll pay in a year can shift, affecting your financial exposure if you have a serious health event.

Why AEP Is Your Only Chance

Outside of a few special circumstances (like moving to a new area or losing other coverage), AEP is the only time you can switch Medicare Advantage plans. If you miss the December 7 deadline, you're locked in for all of 2027.

That's 12 months with a plan that may no longer serve you well.

What to Do Before December 7

1. Review your Annual Notice of Change (ANOC). Your current carrier mailed this by October 1. Read it carefully — especially the sections on premiums, drugs, and network changes.

2. Check if your doctors are still in-network. Call your primary care physician's office or use your plan's online provider directory to verify.

3. Compare your options. There may be a plan in the Buffalo area that covers your doctors, your medications, and your preferred hospitals — at a lower cost.

4. Talk to a local, independent advisor. Unlike a carrier's own agents, an independent advisor like Michael Wilson can compare plans from multiple companies and give you an unbiased recommendation.

The comparison is free. The consultation is free. And the peace of mind that comes from knowing you're in the right plan? That's priceless.