PENNSYLVANIA INSTITUTIONAL HEALTH SERVICES, INC.; Carl A. Hoffman; John Lesniewski; Edward Russek; Paul F. Phillips; Robert Davis; and Dana Powell, Appellants, v. COMMONWEALTH of Pennsylvania, DEPARTMENT OF CORRECTIONS; Raymond Clymer Jr., as Acting Executive Deputy Commissioner, Department of Corrections; Robert A. Bittenbender, Secretary of the Budget; and Gary E. Crowell, Secretary of General Services, Appellees