Arkansas Arkansas View Districts View Counties Arkansas Total Medicare Advantage (MA): Percent of total Medicare beneficiaries enrolled in MA plans. MA Enrollment: Total number of beneficiaries enrolled in a MA plan. Medicare Total: Total number of Medicare beneficiaries. Medicare Fee-For-Service: Total number of beneficiaries enrolled in traditional fee-for-service Medicare. Other Medicare Health Plans: Total number of beneficiaries in other private Medicare plans (e.g., Cost Plans, PACE, and demonstrations).