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Medicare Part D Enrollment Periods (AEP, MA-OEP, IEP, SEP)

The annual Open Enrollment Period (AEP) for stand-alone Medicare Prescription Drug Plans (PDPs) and Medicare Advantage plans (MAs & MAPDs) is October 15th through December 7th with the newly selected plan taking effect January 1st of the following year. Anyone eligible for Medicare Part A and/or Part B can enroll or switch Medicare Part D plans during the AEP. To enroll in a Medicare Advantage plan, you must be enrolled in both Medicare Part A and Part B. When enrolling in a Medicare Advantage plan, you must continue to pay your Medicare Part B premium.

The annual Medicare Advantage Open Enrollment Period (MA OEP) for Medicare Advantage plans is January 1st through March 31st -- during the MAOEP Medicare Advantage plan members can change their Medicare Advantage plan or switch back to Original Medicare and enroll in a stand-alone Medicare Part D drug plan.

People who are new to Medicare have a seven (7) month period (called an Initial Enrollment Period) to enroll in a Medicare Part D or Medicare Advantage plan. This enrollment window begins 3 months before your month of eligibility, and includes your month of eligibility and three months thereafter. Example: If you turn 65 on July 13th. Your month of Medicare eligibility is July. Your Initial Enrollment Period (IEP) is April to October. If you were to enroll between April 1 and June 31, your plan would take effect on July 1. If you enroll between July 1 and October 31, your plan would take effect the first day of the month after you enroll.

A Special Enrollment Period (SEP) may be granted to some people in certain situations allowing them the opportunity to enroll or switch plans outside of the Annual Open Enrollment Period (AEP). Click here for a list of SEPs.