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

JOHN O'BRIEN CLARKE, MD

GASTROENTEROLOGY

Medical school: UNIVERSITY OF MISSOURI, COLUMBIA SCHOOL OF MEDICINE

Graduated: 1999

Offers telehealth

NPI: 1467539643

Practice Locations (5)

STANFORD HEALTH CARE

5800 HOLLIS ST

EMERYVILLE, CA 946082016

5108062100

STANFORD HEALTH CARE

170 ALAMEDA DE LAS PULGAS

REDWOOD CITY, CA 940622751

6503695811

STANFORD HEALTH CARE

420 BROADWAY ST

REDWOOD CITY, CA 940633132

6507234000

STANFORD HEALTH CARE

450 BROADWAY ST

REDWOOD CITY, CA 940633132

6507234000

STANFORD HEALTH CARE

300 PASTEUR DR

STANFORD, CA 943052200

6507234000

Source: CMS National Downloadable File, September 2026.

JOHN CLARKE, MD | HealthCareAtlasUSA