Thomas Andrew Scully (born October 24, 1957) is an American lawyer and former government official. He was the Administrator of the Centers for Medicare and Medicaid Services (CMS) from 2001 to 2004 under President George W. Bush. Scully is currently a general partner at Welsh, Carson, Anderson & Stowe, a private equity investment firm, where he focuses on health care investments. Scully is also Principal at Federal Health Policy Strategies and a partner at its affiliated law firm Scully, Roskey & Missmar, where he focuses on health care regulatory and legislative matters, as well as on advising clients on health policy and strategies for health care delivery.