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

Dr. Katharine Fast, MD

Individual provider Allergy & Immunology Physician · NPI 1275720484

Dr. Katharine Fast, MD is an Allergy & Immunology Physician in San Francisco, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

450 Sutter St Allergy And Immunology Ste 1336
San Francisco, CA 94108-4206
Phone: (415) 433-7800
Fax: (415) 433-2130
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence A92138 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A92138 (CA)

Record details

NPI number1275720484
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 2, 2007
Last updated in NPPESJanuary 18, 2012
Mailing address450 Sutter St, Allergy And Immunology Suite 1336, San Francisco, CA 94108-4206

Other providers in San Francisco