The Medicare Open Enrollment period is from October 15 to December 7 every year. During the annual enrollment period (AEP) you can make changes to various aspects of your coverage. If Medicare eligible (65+ years):
If you want to enroll in a Medicare Advantage plan, you must meet some basic criteria.
Is auto-renewal available?
If you’re already enrolled in a Medicare Part D prescription plan or a Medicare Advantage Plan and you don’t want to make changes to your coverage for the coming year, you don’t need to do anything during the annual enrollment period (AEP).
Changing Medicare Advantage coverage after the annual enrollment period
Between January 1 and February 14 each year, if you are enrolled in a Medicare Advantage plan, you can leave your plan and return to original Medicare. You cannot switch to another Advantage plan unless you have a circumstance that affords you a Special Enrollment Period.
After you leave your plan, you have until February 14 to enroll in a Part D plan which begins the first day of the following month after you enroll.
Enrolling in Original Medicare
If you didn’t sign up for Medicare A and B when you were first eligible, you have a chance to do so each year between January 1 and March 31, with coverage effective as of July 1. However, you may be subject to a late enrollment penalty. For Medicare Part B, the penalty is an additional 10 percent of the premium for each 12-month period you were eligible, but not enrolled.