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

GIGI QIQI CHEN, MD

HEMATOLOGY/ONCOLOGY

Graduated: 2002

Offers telehealth

NPI: 1821073636

Practice Locations (1)

JOHN MUIR PHYSICIAN NETWORK

1914 TICE VALLEY BLVD

WALNUT CREEK, CA 945952203

9259887595

Source: CMS National Downloadable File, September 2026.

GIGI CHEN, MD | HealthCareAtlasUSA