Headquartered in Pittsburgh, UPMC is a global health care leader. We operate 40 hospitals and 800 doctors’ offices and outpatient sites in PA, MD, and NY. Life Changing Medicine. Providence Cancer Treatment Services, LLC (PCTS) is a subsidiary of Susquehanna Health System (SHS). The mission of SHS and affiliates is as follows To extend God's healing love by improving the health of those we serve. Our vision is to create a high quality patient