In 2024, over half of Medicare enrollees received coverage through MedicareAdvantage (MA) plans (Freed et al 2024a). MA has grown rapidly in the past decade,from about a third of Medicare enrollment in 2015 to over half in 2024. The growth ofMA has important implications for the financial sustainability of the…

A Medicare buy-in program would allow qualifying individuals currently ineligible for Medicare to purchase a Medicare-like health insurance plan. The buy-in would be administered as a distinct program but could take advantage of Medicare's premium structure, benefit design, or provider payment rates (NASI 2020). After comprehensive health reform failed to…