Cardiovascular Specialists, Inc., and Stewart Katz, MD, paid $270,000 to settle civil claims stemming from allegations that Cardiovascular Specialists and Dr. Katz submitted false claims to Medicare and TRICARE. Cardiovascular Specialists is an Oklahoma corporation which operated a cardiology clinic in Tulsa, Oklahoma, (Clinic). Dr. Katz is a cardiologist who owned and practiced at the Clinic. The United States alleges that from January 1, 2016, through February 28, 2020, Cardiovascular Specialists and Dr. Katz engaged in improper “incident-to” billing. Specifically, Cardiovascular Specialists and Dr. Katz submitted or caused the submission of claims to Medicare for the payment of evaluation and management (E&M) services under Dr. Katz’s National Provider Identification number that were performed by nurse practitioners when Dr. Katz was not in the Clinic supervising them. The United States also alleges that from January 1, 2015, through June 16, 2022, Cardiovascular Specialists and Dr. Katz submitted or caused the submission of claims to Medicare and TRICARE for E&M services that should have been billed at a lower reimbursement level. To resolve the claims, Cardiovascular Specialists and Dr. Katz agreed to pay $270,000 to the United States.