Physician-led Medicare accountable care organizations (ACOs) in the Medicare Shared Savings Program (MSSP) achieved nearly seven times more Medicare savings per beneficiary than hospital-led ACOs. For all ACOs in 2018, aggregate savings per-beneficiary totaled $73.23. Physician-led ACOs, which tend to be “low revenue” ACOs, generated savings of $180.41 per Medicare beneficiary. Hospital-led ACOs, which tend…