During the Annual Enrollment Period (October 15 – December 7)
Americans who are already enrolled in Medicare Advantage can:
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Switch to Original Medicare.
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Enroll in or switch to another Medicare Advantage Plan.
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Make changes to your Part D plan or switch to a new one.
During the General Enrollment Period (January 1 – March 31)
Americans who are already enrolled in Medicare Advantage can:
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Enroll in Medicare Part A and/or B for the first time if you missed your Initial Enrollment Period.
During the Medicare Advantage Open Enrollment Period (January 1 – March 31),
Americans who are already enrolled in Medicare Advantage can:
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Switch to Original Medicare.
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Switch to a Different Medicare Advantage Plan.
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Only One Plan Change is Allowed During This Window.