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

Derek Truong Phan MD Inc

Organization Internal Medicine Physician · NPI 1598091837

Derek Truong Phan MD Inc is an Internal Medicine Physician in Westminster, California. Licensed in California. Registered with an NPI since 2009.

Licensed in
CA
In the registry since
2009
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

9191 Bolsa Ave Ste 205
Westminster, CA 92683-5564
Phone: (714) 891-7035
Fax: (714) 897-8304
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A99908 (CA)

Record details

NPI number1598091837
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Derek Phan — Owner · (714) 383-1661
NPI enumeratedOctober 21, 2009
Last updated in NPPESOctober 21, 2009
Mailing address9191 Bolsa Ave, Suite 205, Westminster, CA 92683-5564

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