Part C and D Performance Data | CMS
Summary: This ZIP archive contains the official 2027 Star Ratings data tables for Medicare Part C and D plans, released by CMS on October 8, 2026.
This file is a collection of performance data tables for Medicare Advantage (Part C) and Prescription Drug (Part D) plans for the 2027 Star Ratings cycle. It includes detailed domain-level star ratings and performance metrics, providing transparency into plan quality and outcomes. These tables are essential for researchers, stakeholders, and beneficiaries evaluating plan performance.
Document outline
1. 2027 Star Ratings Data Table - Domain Stars (Oct 8 2026).csv