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

Dr. Darby Annette Clayson, MD

Individual provider Internal Medicine Physician · NPI 1619968021

Dr. Darby Annette Clayson, MD is a Hospitalist in San Francisco, California. Graduated from Baylor College of Medicine in 1998, 28 years ago. Practices with San Francisco Unified Physicians Group, Inc, an 18-clinician group. Licensed in California and Nevada.

Years since qualifying
28
Trained at
Baylor College of Medicine
Licensed in
CA, NV
In the registry since
2005
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

1575 7th Ave
San Francisco, CA 94122-3704
Phone: (702) 453-3799
Fax: (702) 453-5741
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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 A139455 (CA)
Military Health Care Provider Taxonomy 171000000X · Licence 11502 (NV)
Internal Medicine Physician Taxonomy 207R00000X · Licence 11502 (NV)

Record details

NPI number1619968021
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 3, 2005
Last updated in NPPESFebruary 27, 2026
Certification dateFebruary 27, 2026

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolBAYLOR COLLEGE OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice San Francisco Unified Physicians Group, Inc — 18 clinicians
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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