HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / CA

TOM S CHIEN, MD

EMERGENCY MEDICINE

Medical school: GEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE

Graduated: 2005

NPI: 1225205131

Practice Locations (1)

PERMANENTE MEDICAL GROUP INC

1200 EL CAMINO REAL

SOUTH SAN FRANCISCO, CA 940803208

6507422000

Source: CMS National Downloadable File, September 2026.