The MHA recently updated its analysis of Medicaid and Medicare enrollment based on May 2025 data. The analysis includes program enrollment as a percentage of each county’s total population and the split between fee-for-service and managed care organizations. Just over 26% of Michigan’s total population is enrolled in Medicaid and 23% is enrolled in Medicare.
Roughly two-thirds of Michigan’s 2.63 million Medicaid beneficiaries, are enrolled in one of nine managed care plans.
Total Medicare enrollment is 2.27 million, with 63% of beneficiaries enrolled in a Medicaid Advantage (MA) plan and only two counties having less than 50% of total Medicare enrollment in MA plans. MA enrollment by county ranges from 46% to 78%, with 72 counties having 55% or more of their Medicare population enrolled in an MA plan.
May enrollment is spread across 46 MA plans, with up to 29 plans covering beneficiaries in several Michigan counties and a minimum of six plans available in each county.
Members with enrollment questions should contact the Health Finance team at the MHA.