William, Tong DDS/DMDAttending PhysicianGeneral Dentistry Education: Keck School of Medicine of USCMain Office:408.245.6888 William Tong DDS & Yvonne Wong DDS 903 W. El Camino Real Sunnyvale, CA 94087 Office Hours: Monday: 10 a.m. to 6 p.m. Tuesday: Closed Wednesday: 10 a.m. to 6 p.m. Thursday: Closed Friday: 10 a.m. to 6 p.m. Saturday: By Appointment