Medicare Advantage Penetration
In 2019, one-third (34%) of all Medicare beneficiaries – 22 million people – are enrolled in Medicare Advantage plans, similar to the rate in 2017 and 2018. Between 2018 and 2019, total Medicare Advantage enrollment grew by about 1.6 million beneficiaries, or 8 percent – nearly the same growth rate as the prior year. The Congressional Budget Office (CBO) projects that the share of beneficiaries enrolled in Medicare Advantage plans will rise to about 47 percent by 2029.
The share of Medicare beneficiaries in Medicare Advantage plans across the United States ranges from 1% to over 40%.
The share of Medicare beneficiaries in Medicare Advantage plans varies across counties from less than 1% to more than 60%.