Summary of Enrollment Periods for Medicare Parts A, B, C & D

	Part A	Part B	Part C (Medicare Advantage plans)	Part D (Prescription Drug plans)
IEP – Initial Enrollment Period	Starts 3 months before and ends 3 months after month of eligibility — total of 7 months	Starts 3 months before and ends 3 months after month of eligibility — total of 7 months	ICEP can be 3 to 7 months depending on enrollment in Part B	Starts 3 months before and ends 3 months after month of eligibility — total of 7 months
GEP – General Enrollment Period	Jan 1 to Mar 31	Jan 1 to Mar 31	Apr 1 – Jun 30	Apr 1 – Jun 30
AEP – Annual Election Period			Oct 15 to Dec 7	Oct 15 to Dec 7
SEP – Special  Enrollment Period & Special Election Periods		Yes – Special Enrollment Period	Yes – Special Election Periods	Yes – Special Election Periods
MA OEP – Medicare Advantage Open Enrollment Period			Jan 1 to Mar 31