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Medicare · Daily

Understanding Medicare's Annual Enrollment Period: A Chance to Review

Each year, Medicare offers a specific window to review and change your coverage. This annual enrollment period is not just for new enrollees; it's a vital opportunity for everyone with Medicare to ensure their plan still meets their health and financial needs.

By Editorial Desk · The Health Almanac Editorial TeamPublished October 14, 20264 min read

As we navigate health and aging, the choices we make about our healthcare coverage are among the most important. For those on Medicare, there's a dedicated time each year, known as the Annual Enrollment Period (AEP), to revisit these choices. This isn't merely a formality; it's a chance to actively manage your health costs and access to care.

What is the Annual Enrollment Period?

The Medicare Annual Enrollment Period runs from October 15 to December 7 each year. During this time, all people with Medicare can make changes to their health and prescription drug plans. Any changes you make will become effective on January 1 of the following year. This period is different from the Initial Enrollment Period (when you first become eligible for Medicare) or Special Enrollment Periods (triggered by specific life events).

Think of AEP as an annual check-up for your Medicare coverage. Even if you're generally satisfied with your current plan, it's wise to take a moment to confirm it still serves you best. Plans often change their benefits, costs, and provider networks from year to year. Your health needs or financial situation might have also shifted.

Why is Reviewing Your Plan Critical?

Medical needs can evolve. A medication you started taking this year might not be covered as favorably by your current Part D plan next year, or perhaps a new health condition means you'll benefit from a different Medicare Advantage plan that offers specific services or specialists. Similarly, your current plan might be increasing its premiums, deductibles, or co-pays, making a different plan more cost-effective.

Insurance companies also adjust their offerings. A Medicare Advantage plan might add or drop providers from its network, or a Part D plan might change its formulary (the list of covered drugs). Staying with a plan without reviewing it could lead to unexpected out-of-pocket costs or a disruption in accessing your preferred doctors or medications.

How to Approach Your Annual Review

Starting in October, you should receive an "Annual Notice of Change" (ANOC) from your current plan. This document details any changes for the upcoming year. Read it carefully. Compare your current plan's changes against other available plans in your area. Medicare.gov provides a plan comparison tool that allows you to enter your medications and preferred pharmacies to see estimated costs for different Part D plans.

Consider these key factors:

  • Premiums, Deductibles, and Co-pays: How do these costs compare across plans?
  • Drug Coverage: For Part D plans, check if all your current medications are covered, what tier they fall into, and if there are any restrictions.
  • Provider Network: For Medicare Advantage plans, ensure your doctors and specialists are still in-network.
  • Extra Benefits: Some Medicare Advantage plans offer benefits like dental, vision, hearing, or fitness programs. Do these align with your needs?

If you find a new plan that better fits your situation, you can switch during AEP. There's no need to notify your old plan; your new plan will handle the transition automatically. If you decide not to make any changes, and you have a Medicare Advantage or Part D plan, your current plan will generally renew automatically, though it's still essential to understand its updated terms.

Taking the time during AEP to review your options is an empowering step. It ensures your Medicare coverage continues to be a supportive partner in your health journey, rather than a source of unexpected expenses or care limitations.

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  • updateOctober 14, 2026 — Daily evergreen · Medicare
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