What is the phone number for genesis healthcare corporate office? Genesis HealthCare Corporate Office Headquarters. Stock Symbol: Private Company. Address: 101 E. State St. Kennett Square, PA 19348. Corporate Phone Number: 1-610-444-6350. Fax Number: 1-610-925-4000.What is genesis rehab services? Genesis Rehab Services (GRS) is a leading provider of physical therapy, occupational therapy, speech therapy, respiratory therapy and wellness services, primarily for the older adult population.What is genesis health care? Genesis Health Care is a nonprofit, Federally Qualified Health Center, serving the Pee Dee, SC area with locations in Darlington, Olanta, Florence, and Lamar as well as Walterboro, SC.