Becker’s Hospital Review is tracking health-system exits from selected Medicare Advantage networks during 2026. Its September 22 update lists 34 systems, including announced changes with later effective dates.
Massachusetts context
Mass General Brigham’s official update describes primary care network changes for selected Medicare Advantage plans. Details vary by location; hospital and specialty participation should be checked separately.
Its Cooley Dickinson update identifies an October 1, 2026 change affecting Blue Cross Medicare Advantage primary care networks, with a transition period through December 31, 2026.
What to check
For revenue teams, the practical next step is to confirm the exact plan, provider, service, and effective date before updating eligibility or scheduling guidance. Patients should confirm network status and benefits directly with their health plan.
Read the sources
- Becker’s Hospital Review: 2026 Medicare Advantage network changes →
- Mass General Brigham: plan and location details →