MHA Shares Latest Medicare and Medicaid Enrollment Analysis

The MHA recently updated its analysis of Medicaid and Medicare enrollment based on February 2026 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 organization. Just over 25% of Michigan’s total population is enrolled in Medicaid and 23% is enrolled in Medicare.

Roughly two-thirds of Michigan’s 2.5 million Medicaid beneficiaries are enrolled in one of nine managed care plans.

Total Medicare enrollment is 2.3 million with 64% of beneficiaries enrolled in a Medicaid Advantage (MA) plan with only three counties having less than 50% of total Medicare enrollment in MA plans. MA enrollment by county ranges from 44% to 79%, with 73 counties having 55% or more of their Medicare population enrolled in an MA plan as highlighted below.

February enrollment is spread across 45 MA plans with up to 29 plans covering beneficiaries in several Michigan counties, with a minimum of five plans available in each county.

Members with enrollment questions should contact the MHA health finance team.

CMS Implements New Online Form for Medicare Advantage Complaints

The Centers for Medicare & Medicaid Services (CMS) recently implemented a new online form for providers to submit complaints related Medicare Advantage (MA) plans.

A CMS memorandum announced the implementation of the form, which is now live and available to providers. The online form collects information about the complainant, beneficiary, provider and the MA plan involved. Providers are also prompted to submit a complaint summary, with optional fields for service dates and claim numbers.

Once a complaint has been submitted via the online form, it will be placed in a queue in the Health Plan Management System Complaints Tracking Module for review and triage. CMS will continue to serve as an arbitrator, working to facilitate resolution between the MA plan and the provider.

The MHA encourages members to use this form when experiencing issues related to MA claims.

Members with questions may contact Megan Blue at the MHA.