Enrollment Periods

When to join a Medicare health or drug plan: You can only join, switch, or drop a Medicare Advantage Plan (Part C) or Medicare drug plan (Part D): At certain times, called enrollment periods.

Enrollment Period:

You Can:

Coverage Starts:

Initial Enrollment Period (new to Medicare)

Starts 3 months before you get Medicare and ends 3 months after you get Medicare.

Join any plan.

  • You need both 
    Part A (Hospital Insurance)

     and 

    Part B (Medical Insurance)

     to join a Medicare Advantage Plan.

  • You need either Part A or Part B to join a Medicare drug plan.

Varies, depending on when the plan gets your request:

  • If you request to join a plan before your Medicare starts: Your plan coverage starts the same day as when your Medicare starts.
  • If you request to join a plan after your Medicare starts: Your plan coverage starts the first of the month after the plan gets your request.

Initial Enrollment Period – New to Part B
(only if you get Part B after your Part A coverage starts)

The 3 months before your Part B starts.

Join any Medicare Advantage Plan with or without drug coverage.

The same day as when your Part B coverage starts.

Annual Enrollment Period
October 15-December 7.

  • Join, drop, or switch to another Medicare Advantage Plan (or add or drop drug coverage).
  • Switch from Original Medicare to a Medicare Advantage Plan or from a Medicare Advantage Plan to Original Medicare.
  • Join a Medicare drug plan if you’re in Original Medicare.
  • Switch from one Medicare drug plan to another if you’re in Original Medicare

January 1 of the next year.

Medicare Advantage Open Enrollment Period
(only if you’re already in a Medicare Advantage Plan)

  • January 1-March 31.
  • Within the 
    first 3 months you get Medicare
  • Switch to another Medicare Advantage Plan with or without drug coverage.
  • Drop your Medicare Advantage Plan and go back to Original Medicare.
  • Join a Medicare drug plan

First of the month after the plan gets your request.

Special Enrollment Period Varies. Only for certain situations that happen in your life, like moving to a new address, losing or changing your current coverage, getting Medicaid, or getting.

If you sign up for Medicare Part A or Part B during a Special Enrollment Period (SEP), it means you are enrolling outside of your initial enrollment period and can do so due to a qualifying life event, like losing employer-sponsored health insurance, which allows you to join Medicare without facing a late enrollment penalty, and your coverage typically begins the month after your application is processed by Social Security.

Key points about signing up during a SEP: 
  • No late enrollment penalty
  • Limited timeframe:
    Each SEP has a specific time window during which you can enroll

Generally, you can join a Medicare Advantage Plan (with or without drug coverage) or Medicare drug plan, or switch to another plan.

Starting January 1, 2025, if you sign up for Part A and/or Part B during a Special Enrollment Period because of an exceptional situation, you’ll have 2 months to join a plan or switch to another plan.

Varies. Generally, the first of the month after the plan gets your request.

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Ron Desormeaux

Independent Medicare Plan Broker 

Medicare Supplements & Advantage Plans

Phone: 337-302-2930

Fax: 833-806-2414

Email: insuranceman@post.com

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Currently, we represent 12 organizations which offer 47 products in your area. You can always contact Medicare.Gov, 1-800-MEDICARE, or your local State Health Insurance Program (SHIP) for help with plan choices.

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