General Enrollment Periods

INITIAL ENROLLMENT PERIOD (IEP)

The seven-month period when individuals are first eligible for Medicare. It is the three months before they turn 65, their birth month, and the three months following their birth month.

PART B GENERAL ENROLLMENT PERIOD (GEP)

If initial enrollment is missed, eligible Medicare beneficiaries can sign up for Medicare Part B between January 1 and March 31 each year.

OPEN ENROLLMENT PERIOD (OEP)

October 15 – December 7 each year.  During this time, Medicare beneficiaries can switch from Original Medicare to a Medicare Advantage plan (with or without Part D included), enroll in a Part D plan, disenroll from Part D, or switch Part D plans.

MEDICARE ADVANTAGE DISENROLLMENT PERIOD (MADP)

January 1 – February 14 each year. Medicare beneficiaries can leave their Medicare Advantage plan and return to Original Medicare and enroll in a stand-alone Part D plan.

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