The MHA updated its analysis of Medicaid and Medicare enrollment based on December 2024 data. The analysis includes program enrollment as a percentage of each county’s total population and the split between fee-for-service (FFS) and managed care organization (MCO). Just over 27% of Michigan’s total population is enrolled in Medicaid and 22% is enrolled in Medicare.
Roughly two-thirds of Michigan’s 2.66 million Medicaid beneficiaries are enrolled in one of nine managed care plans.
Total Medicare enrollment is 2.25 million, with 62% of beneficiaries enrolled in a Medicaid Advantage (MA) plan and only three counties having less than 50% of total Medicare enrollment in MA plans. MA enrollment by county ranges from 45% to 77%, with 66 counties having 55% or more of their Medicare population enrolled in an MA plan, as highlighted below.
December enrollment is spread across 54 MA plans, with up to 29 plans covering beneficiaries in several Michigan counties and a minimum of 5 plans available in each county.
Members with enrollment questions should contact the MHA Health Finance team.