• Laura Skopec, Joshua Aarons, and Stephen Zuckerman.
• Urban Institute, 500 L'Enfant Plaza SW, Washington, DC 20024. Email: lskopec@urban.org.
• Am J Manag Care. 2019 Sep 1; 25 (9): e261-e266.

ObjectivesTo explore whether the Affordable Care Act (ACA)'s Medicare Advantage (MA) payment cuts were associated with changes in enrollees' access to and affordability of healthcare relative to traditional Medicare (TM).Study DesignDescriptive analyses of changes in access and affordability in MA relative to TM between 2009 and 2017 and between 2011 and 2017.MethodsRespondents who reported Medicare coverage on the National Health Interview Survey were divided into MA and TM enrollees. Using multivariate regression to adjust for demographic, economic, and health status changes over time, we compared changes in healthcare access and affordability for the 2 groups between 2009 and 2017, as the ACA payment cuts were implemented. For some measures, the analysis covers 2011 to 2017.ResultsBetween 2009 and 2017, MA respondents did not report statistically significant changes in healthcare access or affordability after adjusting for demographic, socioeconomic, and health status changes in the MA population. There were no statistically significant differences between changes in access and affordability for beneficiaries in MA relative to those in TM over this period.ConclusionsAlthough MA payment cuts were expected to reduce the attractiveness of the MA program to both plans and enrollees, the program's enrollment grew steadily from 2009 to 2017. Over this period, plans reduced their costs for providing Part A and Part B benefits to their enrollees, thereby preserving room for rebates. Our findings show that plans made such cost reductions without significantly affecting enrollees' access to or affordability of care compared with TM beneficiaries.

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