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

CHESTER D ZAHN, MD

GASTROENTEROLOGY

Medical school: STANFORD UNIVERSITY SCHOOL OF MEDICINE

Graduated: 1983

Also: INTERNAL MEDICINE

Offers telehealth

NPI: 1639146442

Practice Locations (1)

1026 E LAS TUNAS DR

SAN GABRIEL, CA 917761633

6262877222

Source: CMS National Downloadable File, September 2026.

CHESTER ZAHN, MD | HealthCareAtlasUSA