MECHANICSBURG, Pa. , Sept. 2, 2025 /PRNewswire/ -- Select Medical Holdings Corporation ("Select Medical") (NYSE: SEM) today announced the appointment of Thomas P. Mullin as its chief executive officer. David S. Chernow , who has held the position since 2014, has been appointed vice chairman of the board. John A. Saich , who most recently held the position of co-president, will serve as the company's sole president. John F.... Read More