Tenet HealthSystem GB, Inc. v. Care Improvement Plus South Central Insurance Company

WALKER, Circuit Judge:

Plaintiffs-appellants- are eleven hospitals (the “Plaintiff Hospitals” oí “the Hospitals”) who provided -medical care .to Medicare Part C enrollees after being authorized to do so by the defendant-appellee, Care Improvement Plus (“CIP”). BB 4-5. CIP is a Medicare Advantage Organization (“MAO”), which is a private instance company that manages the Medicare benefits of Part C enrollees. CIP initially reimbursed the Hospitals in full, but several years later it recouped a substantial portion of these payments through offsets, claiming they were not authorized • under Part C…