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

Thomas P Twaddell, MD

Individual provider Gastroenterology Physician · NPI 1760751176

Thomas P Twaddell, MD is a Gastroenterology Physician in San Francisco, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2011
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

600 Duncan St
San Francisco, CA 94131-1841
Phone: (415) 206-9293
Fax: (415) 206-9293
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

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence CFE28737 (CA)

Record details

NPI number1760751176
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 14, 2011
Last updated in NPPESFebruary 28, 2013

Other providers in San Francisco