![A calendar is shown with the text January 1 - March 31 (OEP).](/sites/default/files/styles/media/public/2022-12/MADV%20OEP2.png?itok=LGLVfUXL)
Open Enrollment Period
Anyone with Medicare Advantage can:
- Change to another Medicare Advantage plan
- Return to Original Medicare and select a prescription drug plan (PDP)
![A calendar is shown with the text October 15 - December7 (AEP).](/sites/default/files/styles/media/public/2022-12/MADV%20AEP2.png?itok=03c-xPjY)
Annual Enrollment Period
Individuals with Medicare can join or switch ALL types of Medicare plans.
![A calendar is shown with the text Depends on Eligibility (IEP).](/sites/default/files/styles/media/public/2022-12/MADV%20IEP2.png?itok=R14nnCoD)
Initial Enrollment Period
Anyone aging in, IEP begins three months before their 65th birthday and ends three months after.
![A calendar is shown with the text Depends on Eligibility (SEP).](/sites/default/files/styles/media/public/2022-12/MADV%20SEP2.png?itok=44xreAYT)
Special Enrollment Period
An enrollment period dependent on specific conditions, such as:
- Losing health coverage
- Moving to a new area
- Being affected by a declared emergency like a hurricane or earthquake
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