Which of the following is a requirement for Medicare Part D coverage?

For Medicare Part D coverage, one of the essential requirements is that an individual must be enrolled in Medicare Part A or a combination of Part A and Part B. This is important because Part D is designed to provide prescription drug coverage to those who already qualify for Medicare, ensuring that beneficiaries have access to necessary medications while they are covered by these foundational parts of the Medicare program.

By being enrolled in either Part A or both Parts A and B, beneficiaries can access the additional benefits of Medicare Part D, enhancing their healthcare experience. This connection reinforces the structure of Medicare, where supplementary parts build upon the foundational coverage provided by Part A and Part B.

The other options are not requirements for Medicare Part D. Enrollment in Part C (Medicare Advantage) is unnecessary, prior enrollment in a Medicare Advantage plan does not impact eligibility, and there is no age restriction such as being over 75 in order to qualify for Part D. This means that as long as an individual is eligible for Medicare, they can obtain Part D regardless of their age.