Individual provider · Type 1 NPI

Darby Annette Clayson, MD

Internal Medicine Physician · San Francisco, CA

NPI number 1619968021 Active

Practice location

1575 7th Ave
San Francisco, CA 94122-3704

Call (702) 453-3799 Map

Fax (702) 453-5741

Mailing address

PO Box 31085
San Francisco, CA 94131-0085

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000XA139455 (CA)
Military Health Care Provider 171000000X11502 (NV)
Internal Medicine Physician 207R00000X11502 (NV)

Internal Medicine Physician: A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medi…

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About NPI 1619968021

Darby Annette Clayson, MD's National Provider Identifier is 1619968021, issued on Nov 3, 2005. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in San Francisco, CA. The record was last updated on Feb 27, 2026.