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

Warren C Fan, MD

Individual provider Contractor · NPI 1245260538

Warren C Fan, MD is a Contractor in Upland, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
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

637 N 13th Ave
Upland, CA 91786
Phone: (909) 946-4106
Fax: (909) 949-4366
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

Contractor (primary) Taxonomy 171W00000X · Licence A32805 (CA)

Record details

NPI number1245260538
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 3, 2006
Last updated in NPPESJuly 8, 2007
Mailing address637 N 13th Ave, Upland, CA 91786-4906

Other providers in Upland