About 48% of the 58.6 million Medicare beneficiaries in 2022 are enrolled in a Medicare Advantage plan. Between 2007 and 2022, the share of eligible Medicare beneficiaries enrolled in Medicare Advantage plans has doubled, from 19% to the current 48%. About 46% of all Medicare Advantage members are enrolled in a plan offered by UnitedHealthcare or Humana. In about one-third of counties covered, at least 75% of Medicare Advantage members are enrolled in a UnitedHealthcare or Humana plan.
About 69% of the 28.4 million Medicare Advantage members are enrolled in plans with premium drug coverage that requires . . .