Memorial Sloan Kettering Cancer Center, which has three locations on Long Island, has struck a deal with UnitedHealthcare that will allow more than 19,000 patients to continue to receive in-network care.

UnitedHealth Group Inc. and Memorial Sloan Kettering Cancer Center are locked in a contract standoff that threatens to interrupt treatment for thousands of cancer patients in the New York area.

In late June 2025, the health insurance company and the world-renowned New York City cancer center were at an impasse in negotiations.