When do I first become eligible for Medicare?
3 months prior to the month before you turn 65
The month you turn 65
3 months after the month you turn 65

When do I first become eligible for Medicare if I have a Disability?
3 months prior to 3 months after your 25th month of disability
3 months prior to 3 months after you turn 65

When can I Switch or Drop my Medicare Advantage Plan?
Between November 15 – December 31 of each year (as long as the plan gets your enrollment request by December 31). Your coverage will begin on January 1st
Between January 1 – March 31 of each year. Your coverage will begin the first day of the month after the plan gets your enrollment request.
Although during this time you can’t join or switch to a plan with prescription drug coverage (unless you already have Medicare prescription drug coverage), Drop a plan with prescription drug coverage, or join, switch or drop a Medicare Medical Savings Account Plan.

Are There any Other Situations that Might Qualify Me to Join, Switch, or Drop my Medicare Advantage Plan??
Yes, in the following situations you can Join, Switch or Drop your Medicare Advantage Plan:
If you move out of your plan’s service area
If you have both Medicare and Medicaid
IF you qualify for Extra Help to pay for your prescription drug cost
If you live in an institution (like a nursing home)