Fahad Tahir. CEO of Saint Thomas Medical Partners at Saint Thomas Health (Nashville, Tenn.). Mr. Tahir, a fellow in the American College of Healthcare Executives, serves as CEO of Saint Thomas Medical Partners, a physician-led medical group that is part of St. Louis-based Ascension Health. He joined Ascension Health in 2003. In his current role, he oversees the clinical, operational and financial performances of STMP, as well as physician network strategy and physician and service line development. Before joining Ascension, Mr. Tahir was vice president of physician enterprise and community health network at Washington, D.C.-based Providence.