The good news: The Medicare Shared Savings Program (MSSP) has reported a fifth consecutive year of savings while delivering high-quality care for Medicare beneficiaries in accountable care organizations (ACOs). The tricky news: With participation dropping since performance year 2018, ACOs will need places to pivot as success becomes more dependent on risk progression, benchmarking and equity goals. The 2021 MSSP results CMS reported the following highlights from the 2021 MSSP performance year : 99% of participants met the quality targets required for shared savings; 58% earned shared savings; ACOs outperformed non-MSSP providers in metrics related to diabetes, blood pressure, select cancers, fall risk, flu vaccination, tobacco screening and smoking cessation, and screening/remission for depression. ACOs with specific characteristics saved more than their counterparts. This includes ACOs labeled low revenue and those dominated by primary care providers. For example, low-revenue ACOs sa...