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

Individual provider Psychiatry Physician · NPI 1487794020

Dr. John Carter Barker, MD is a Psychiatry in San Francisco, California. Graduated from University of Maryland School of Medicine in 1987, 39 years ago. Practices with City and County of San Francisco, a 369-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
39
Trained at
University of Maryland School of Medicine
Licensed in
CA
In the registry since
2007
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

1990 41st Ave
San Francisco, CA 94116-1101
Phone: (415) 753-7255
Fax: (415) 753-0164
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence G84024 (CA)

Record details

NPI number1487794020
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 6, 2007
Last updated in NPPESAugust 30, 2012
Mailing address1380 Howard St, 5th Floor, San Francisco, CA 94103-2638

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice City And County Of San Francisco — 369 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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