How ACO Conveners Are Changing the Medicare Shared Savings Program (MSSP) Behind the Scenes

Health Affairs Publishing’s Rob Lott speaks to Adam Markovitz of the University of Michigan about his recent paper exploring the growing role of third-party firms in Medicare ACOs, highlighting how they have contributed to wider participation and more geographically dispersed networks while raising questions about how these structures relate to shared savings outcomes.Order the June 2026 issue of Health Affairs.Sign up for our free Health Affairs newsletters to stay up to date on health policy news and analysis.