Medical Group Westchester NewYork-Presbyterian Medical Group Westchester 400 E Sandford Blvd Call for an appointment Find a doctor at this location Opens in Google Maps 400 E Sandford Blvd Mount Vernon, NY 10550 Opens in Google Maps Directions Contact 914-699-0109 Main For department phone numbers please see Contact Us. SpecialtiesInternal Medicine Our Doctors Internal Medicine Gary Guerrino, MD Our Facility Use the left and right arrow keys to navigate the gallery Contact Us Medical Group Westchester 400 E Sandford Blvd, Mt Vernon, NY 10550 Opens in Google Maps 914-699-0109 Internal Medicine