Washington – October 15, 2026 -- Medicare-eligible Americans can now compare insurers using the 2027 U.S. News & World Report ratings for Medicare Advantage and Medicare Part D, published as Open Enrollment begins. Open Enrollment runs from October 15 to December 7, for coverage that takes effect January 1, 2027.
Five insurers top the Medicare Advantage list
The best Medicare Advantage companies are Aetna Medicare, Devoted Health, Humana Inc., Kaiser Permanente and UnitedHealth Group, Inc. For Part D prescription drug coverage, the top companies are Centene and Humana Inc. The 2027 edition also highlights the best Medicare Advantage companies in each state.
U.S. News scored insurers on 31 CMS quality measures
For the Medicare Advantage ratings, U.S. News used data from the Centers for Medicare & Medicaid Services (CMS) for every evaluated insurer's 2027 coverage. In consultation with industry experts, it selected 31 CMS quality measures and weighted each by its relevance to consumers. Results for each insurer's offerings were averaged, with more weight given to coverage options that have the most enrolled seniors.
Jordan Derk, Ph.D., Senior Care Researcher at U.S. News, said insurers are adjusting their coverage areas for 2027, so beneficiaries need reliable performance data to compare quality.
Category winners point to specific strengths
U.S. News also named leaders in consumer-value categories:
- Best for Screening & Prevention: Aetna Medicare and Kaiser Permanente
- Best for Care Continuity: Aetna Medicare and Kaiser Permanente
- Highest Satisfaction (Medicare Advantage): Aetna Medicare, Elevance Health, Inc., Kaiser Permanente and UnitedHealth Group, Inc.
- Highest Satisfaction (Part D): Health Care Service Corporation
U.S. News has also published a guide to choosing a Medicare Advantage plan for 2027 and a Medicare email selection guide for people evaluating coverage for themselves or a loved one.