Health Affairs October 7, 2025
Editor’s Note
This article is part of Health Affairs Forefront featured series, “Assessing The Evidence For MA Reform.” The series was developed and supported by the research firm, Stage Analytics, through a grant from Bristol Myers Squibb. The articles’ analyses and conclusions remain that of the authors. Health Affairs retained review and editing rights, as well as the right to decline any articles that failed to meet Health Affairs Forefront editorial standards.
Over the past two decades, Medicare Advantage (MA) enrollment has grown substantially, eventually outpacing traditional fee-for-service Medicare. By 2024, 32.8 million out of more than 61.0 million (54 percent) Medicare beneficiaries chose to enroll in MA.
Structural differences between Medicare coverage help contextualize the MA enrollment trend. MA...
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