Who is eligible for Medicare Part D?
Part D is available to everyone with Medicare to help cover the cost of prescription drugs not otherwise covered by Medicare Parts A and B. If you are age 65, and eligible for Medicare Part A and/or enrolled in Part B, and a citizen or permanent resident of the United States you are eligible to enroll in a Part D plan. If you do not enroll in a Part D plan when you first become eligible for Medicare you may have to pay a late enrollment penalty for as long as you have Part D coverage. Read more about Medicare penalties here.