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

Individual provider Internal Medicine Physician · NPI 1437372273

Dr. Brian John Hamway, MD is an Internal Medicine in San Francisco, California. Qualified in 1993, 33 years ago. Practices as a sole proprietor. Licensed in California, New Jersey and New York.

Years since qualifying
33
Licensed in
CA, NJ, NY
In the registry since
2007
Specialties on file
3
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

36 Grattan St
San Francisco, CA 94117-4326
Phone: (415) 854-1575
Fax: (877) 992-3841
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G88412 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 203202 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 25MA07710200 (NJ)

Record details

NPI number1437372273
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 10, 2007
Last updated in NPPESJanuary 18, 2017

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Accepts Medicare assignment Not indicated

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