This policy brief continues the RUPRI Center's annual update of Medicare Advantage (MA) enrollment including the changes in enrollment in types of MA plans, and health policy changes that may have had an impact.

Key Findings:

• MA enrollment now exceeds 50 percent of eligible beneficiaries (enrolled in both Part A and Part B) in metropolitan counties (56.1 percent); at the current rate of growth, nonmetropolitan enrollment is expected to exceed 50 percent (currently 48.1 percent) in 2025.
• While the annual rate of MA growth continues to exceed the rate of growth in total Medicare eligible beneficiaries, it has moderated somewhat from previous years.
• Much of the growth in nonmetropolitan MA enrollment has been in plans using local preferred provider organizations, accounting for a majority of MA enrollees in nonmetropolitan counties since 2022.