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Annual Open Enrollment

The Annual Open Enrollment period allows those eligible to apply for Medicare if they missed their initial application window. 

When Does Annual Open Enrollment Take Place?

Annual open enrollment for Original Medicare occurs from January 1–March 31 each year. This means that, during this time, you may apply for Medicare Part A and Part B if you missed your initial enrollment period (IEP) or are not eligible for a special enrollment period (SEP).

Annual Election Period or Annual Coordinated Enrollment Period

Annual open enrollment, sometimes referred to as general enrollment, also has a different span of time available for those who want to change or add coverage to their Medicare insurance. Between October 15 and December 7, Medicare beneficiaries:

  • Switch from Original Medicare to a Medicare Advantage Plan
  • Switch from Medicare Advantage to Original Medicare
  • Switch from an Advantage plan without Prescription Drug Coverage to One with It
  • Switch from a Plan with Prescription Drug coverage to one without
  • Join or Drop a Part D Prescription Drug Plan
  • Switch to a New Insurer

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