What essential action must Mr. Arias take to regain eligibility for a Medicare Advantage plan?

To regain eligibility for a Medicare Advantage plan, Mr. Arias must re-enroll in Medicare Part B. Medicare Advantage plans are offered by private insurers and include coverage that is an alternative to Original Medicare, which consists of Part A and Part B. If an individual loses their Medicare Part B coverage, they are no longer eligible for a Medicare Advantage plan since it requires both Medicare Part A and Part B enrollment.

Re-enrolling in Part B ensures that Mr. Arias has comprehensive coverage for outpatient services, which is a prerequisite for the Medicare Advantage plans that bundle these services into their plans. Therefore, re-establishing his Part B coverage is the critical step for regaining access to Medicare Advantage benefits.

Other options, such as enrolling in Medicaid, rejoining only Part A, or paying for a Medigap policy, do not align with the requirements necessary for Medicare Advantage eligibility. These actions would not restore essential coverage needed for the Medicare Advantage plan, highlighting the importance of Part B enrollment in this context.