ACO & MSSP Models

ACO/MSSP-relevant activity over the last 24 hours centered less on new CMS rulemaking and more on execution capabilities for risk-bearing organizations: Leavitt Partners is pushing HL7 FHIR-based modernization of ACO quality reporting, reinforcing pressure on MSSP participants to move beyond manual abstraction and claims-lagged measurement toward interoperable, near-real-time quality infrastructure (Leavitt Partners). Operationally, Beacon Health System’s rapid closure of an 8,000-patient care gap using agentic AI signals where ACOs are investing to protect shared savings—automated outreach, panel management, and gap closure at scale—while long-term care stakeholders are convening around LTC-ACO partnerships to better integrate post-acute and custodial populations into value-based care models (Beacon case study).