When your hospital leaves your plan

One contract fight makes local news; the pattern behind it is national. Across 2026, a growing list of hospital systems have ended or declined to renew contracts with Medicare Advantage plans, telling reporters the same two reasons over and over: too many care requests delayed or denied through prior authorization, and payments that arrive slowly. A current example is the standoff between NewYork-Presbyterian and UnitedHealthcare, whose latest deadline lands today; if no deal is signed, that hospital becomes out of network for many of the insurer's Advantage members. The reason this matters to anyone, anywhere, is structural. A Medicare Advantage plan is only as good as its network of hospitals and doctors, and that network is not locked in for the life of your enrollment. When a contract lapses, a hospital or large medical group can move out of network in the middle of the year. A few facts soften the blow and are worth carrying into any such dispute. Medicare Supplement plans, including AARP branded ones, are not affected, because Original Medicare has no network. Continuity of care rules often let a patient in an active course of treatment keep seeing their team for a transition period. And if your hospital is in a public contract fight with your plan, the move is the same: call the number on your card, confirm whether your doctors and facilities are still in network, and ask specifically about continuity of care for anything already underway. Before the Annual Enrollment Period this fall, it is worth checking that the hospital and doctors you count on are in your plan's network for next year.