What is one common requirement for participation in a Medicare Advantage plan?

Participation in a Medicare Advantage plan typically requires individuals to be enrolled in both Medicare Part A and Part B. This is crucial because Medicare Advantage plans, also known as Medicare Part C, are alternative ways to receive benefits that are originally provided by Medicare Parts A and B. By being enrolled in both parts, beneficiaries gain access to a broader range of services and coverage options that these plans offer, which may include additional benefits like vision, dental, and wellness programs not covered by traditional Medicare.

The requirement to have both Part A and Part B ensures that participants can seamlessly transition their Medicare benefits into the Advantage plan, allowing for coordinated care and comprehensive coverage. The other options do not fulfill the basic eligibility criteria for participation in these plans, as having a pre-existing condition is not a disqualifier, being a U.S. citizen is not strictly required for all plans, and maintaining a full-time job has no relevance to one's ability to enroll in Medicare Advantage.