Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

James Robert O'Brien, MD

Individual provider Emergency Medicine Physician · NPI 1780143024

James Robert O'Brien, MD is an Emergency Medicine in South San Francisco, California. Graduated from Ohio State University College of Medicine in 2019, 7 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment. Licensed in California and Illinois.

Years since qualifying
7
Trained at
Ohio State University College of Medicine
Licensed in
CA, IL
In the registry since
2019
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1200 El Camino Real
South San Francisco, CA 94080-3208
Phone: (650) 742-2000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A195340 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 125.073615 (IL)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 036164831 (IL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1780143024
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 17, 2019
Last updated in NPPESSeptember 9, 2024
Certification dateSeptember 9, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 2019 (7 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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