Research

Original data research from PlainMedicare, built on the Centers for Medicare & Medicaid Services (CMS) 2026 Star Ratings. 4,533 CMS-rated plans and 914 plans without a current rating appear in the live extract. Our methodology documents each source and aggregation.

Download the matching state aggregates as medicare-advantage-state-statistics.csv (same extract wired into this page's Dataset JSON-LD).