UPMC St. Margaret. 815 Freeport Road. Pittsburgh, PA 15215. 412-784-4000. View a campus map of UPMC St. Margaret (PDF). View directions and find parking. UPMC St. Margaret is an acute-care teaching hospital located in the heart of Allegheny County's Alle-Kiski Valley. We're a Magnet®-designated hospital — the highest international ....