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Medicare · Daily

Understanding medicare's annual enrollment period

Each year, Medicare beneficiaries have a specific window to review and change their health and prescription drug plans. Understanding this period is crucial for ensuring your coverage continues to meet your needs.

By Editorial Desk · The Health Almanac Editorial TeamPublished August 2, 20265 min read

As a Medicare beneficiary, you have choices regarding your health and prescription drug coverage. These choices aren't set in stone; they can, and often should, be revisited annually during the Medicare Annual Enrollment Period (AEP). This is a dedicated time each fall to make changes to your Medicare coverage for the upcoming year.

when is the annual enrollment period?

The Medicare Annual Enrollment Period runs from October 15 to December 7 each year. Any changes you make during this time will become effective on January 1 of the following year. This consistent timeline is designed to give you ample opportunity to evaluate your options and make informed decisions.

why is aep important for you?

Your health needs, medications, and even your budget can change from one year to the next. Similarly, the plans available through Medicare Advantage (Part C) and Medicare Part D (prescription drug plans) can also change. Plans might alter their premiums, deductibles, out-of-pocket limits, formularies (the list of covered drugs), or their network of doctors and hospitals.

Reviewing your coverage during AEP ensures that your plan continues to offer the best value and coverage for your specific circumstances. Sticking with an old plan without review could mean paying more for coverage you don't need, or worse, finding that your essential medications or preferred doctors are no longer covered as you expect.

what changes can you make?

During the AEP, you have several key options:

  • Switch from Original Medicare to a Medicare Advantage Plan: If you currently have Original Medicare (Part A and Part B), you can choose to enroll in a Medicare Advantage Plan (Part C).
  • Switch from a Medicare Advantage Plan back to Original Medicare: If you are in a Medicare Advantage Plan, you can switch back to Original Medicare. You may also be able to join a Medicare Part D plan at this time.
  • Change Medicare Advantage Plans: If you're already in a Medicare Advantage Plan, you can switch to a different Medicare Advantage Plan.
  • Enroll in a Medicare Part D Plan: If you have Original Medicare and want prescription drug coverage, you can enroll in a Medicare Part D plan.
  • Change Medicare Part D Plans: If you're already in a Medicare Part D plan, you can switch to a different one.

It's important to note that if you have a Medigap (Medicare Supplement Insurance) policy, the AEP does not directly affect your Medigap choices. However, if you switch from a Medicare Advantage Plan back to Original Medicare, you may then choose to purchase a Medigap policy, though your ability to do so without medical underwriting might be limited depending on your state and circumstances.

how to approach your review

Take advantage of resources available to you. Medicare.gov provides a plan finder tool that allows you to compare plans in your area based on your specific health conditions, medications, and preferred pharmacies. You can also contact Medicare directly or reach out to your State Health Insurance Assistance Program (SHIP) for unbiased, personalized counseling.

Remember, the goal of AEP is to empower you to have the coverage that best fits your health and financial needs for the coming year. A little time spent reviewing your options can lead to significant peace of mind.

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  • updateAugust 2, 2026Daily evergreen · Medicare
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