Medicare Advantage (MA) and Part D Star Ratings continue to evolve, with several significant developments in recent months. Among them: 

• The average 2025 Star Ratings, overseen by the Centers for Medicare and Medicaid Services (CMS), declined to 3.92 from 4.07.
• Courts ordered recalculations for United and Centene contracts.
• The 2026 Advance Notice, released by CMS in January 2025, proposed substantial structural changes to the program's measurement approach.
• This edition of our Star Ratings white paper series examines the following developments and their potential implications for stakeholders:
• The 2026 Advance Notice
• Litigation updates
• Trump Administration executive orders