USnews.com lists Best Medicare Part D (drug) health plan rankings for 2023. No companies had plans that earned 4.5 or 5 stars, on average, from Medicare for Part D (drug) coverage. Just 10 Part D plans received 4 stars. The highest rated plans came from Highmark, Horizon Blue Cross Blue Shield of New Jersey, Blue Cross Blue Shield of Michigan, Montana or Wyoming; and Wellmark Blue Cross Blue Shield South Dakota. Uses the CMS Star Ratings.