DWIGHT W GUAN MD - NPI 1184644676 - Family Medicine in Upland, CA

Q: What is Dwight Guan's NPI number?

The NPI number for Dwight Guan is 1184644676. It was assigned to this individual provider in the NPPES registry on July 20, 2006.

Q: What is Dwight Guan's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Dwight Guan was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

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About Dwight W Guan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DWIGHT W GUAN MD (NPI 1184644676) is an individual family medicine provider in Upland, California, licensed in California (G59004) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1184644676

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDWIGHT W GUANCredential: MD

Location Address999 SAN BERNARDINO RDUpland, CA 91786-4920

Mailing AddressPo Box 4419Woodland Hills, CA 91365-4419 · (818) 340-9988 · Fax (818) 587-2493

Phone(909) 985-2811

Fax(818) 587-2493

Sole ProprietorNo

Enumeration DateJuly 20, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1184644676 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in CA · G59004

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

Also ListedEmergency MedicineTaxonomy 207P00000X · License G59004 (CA)

999 SAN BERNARDINO RD, Upland, CA 91786

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Other Identifiers 3

Medicaid00G590040CA

Other00G590040CA · Blue Shield

OtherP00247098CA · Railroad Medicare

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

STEPHANIE J RASMUSSEN NP

Nurse Practitioner