In most cases people who are already on a Medigap, Medicare SELECT, or Medicare Advantage plan can freely switch between those three plan types each year during specific enrollment periods.
For example one can switch between Medigap, Medicare SELECT, and Medicare Advantage during the Medicare Advantage Open Enrollment Period (OEP) between January 1 and March 31 and during the Annual Election Period (AEP) between October 15 and December 7.
- Can I Switch Between Medicare Advantage and Medigap? eHealthMedicare.com.
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