For standard prescription drug coverage, you’ll need to have at least Medicare Part A or Medicare Part B, though you’ll also be eligible for the plan if you’re enrolled in both Medicare Part A and Part B. It’s also important that you live in a service area that offers one of these prescription drug plans.
To enroll in Medicare Advantage, there are three requirements you must make sure you meet:
Eligibility for Medicare Part B varies from Medicare eligibility in Part A. An individual must be a U.S. resident and a U.S. citizen. If an individual is not a U.S. citizen, but an alien who is admitted to the United States for permanent residence and has been a resident for the past 5 continuous years prior to applying for Medicare.