Ying, Gu DDS/DMD, PhDAttending and Clinic ProfessorGeneral Dentistry Education: SUNY Stony Brook Dental SchoolMain Office:631-698-2221 Ying Gu D.D.S. PhD Office 113 Nadia Ct Port Jefferson, NY 11777 Additional Office: 34 College Rd Selden,NY,11784 (631) 698-2221