MA Contract Market Share Data

Our Medicare Advantage (MA) Contract Market Share Data provides insights into the competitive landscape of MA plans across states and counties. Built using the Monthly MA Enrollment by State/County/Contract dataset from CMS, this resource allows for a deeper understanding of enrollment trends at the contract level.

Note: We did not update with the most recent data because Connecticut's county data transition to county-equivalent geographic units has not been fully integrated into the CMS data.