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

WARREN HSIAO, MD

INTERNAL MEDICINE

Graduated: 1994

Offers telehealth

NPI: 1316095391

Practice Locations (5)

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP

25821 VERMONT AVE

HARBOR CITY, CA 907103518

3103255111

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP

25825 VERMONT AVE

HARBOR CITY, CA 907103518

3103255111

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP

25965 NORMANDIE AVE

HARBOR CITY, CA 907103416

3103255111

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP

25975 NORMANDIE AVE

HARBOR CITY, CA 907103416

3102576115

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP

20790 MADRONA AVE

TORRANCE, CA 905033777

3107812522

Source: CMS National Downloadable File, September 2026.

WARREN HSIAO, MD | HealthCareAtlasUSA