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DR. DIEM DOAN NGUYEN OD
NPI 1215020490
Optometrist in Westminster, CA

Active since October 02, 2006
9567 BOLSA AVE, WESTMINSTER, CA 92683(714) 775-8080(714) 775-5990 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Diem Doan Nguyen Od NPPES

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

DR. DIEM DOAN NGUYEN OD (NPI 1215020490) is an individual optometrist in Westminster, California, licensed in California (10518T) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1215020490
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameDR. DIEM DOAN NGUYENCredential: OD
Location Address9567 BOLSA AVEWestminster, CA 92683-5904
Mailing Address9567 Bolsa AveWestminster, CA 92683-5904 · (714) 775-8080 · Fax (714) 775-5990
Phone(714) 775-8080
Fax(714) 775-5990
Sole ProprietorNo
Enumeration DateOctober 2, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1215020490 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in CA · 10518T
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
9567 BOLSA AVE, Westminster, CA 92683
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Other Identifiers 3

MedicaidSD010518CA
Medicare ID-Type UnspecifiedOP10518CA
Medicare UPINU59047

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and more.Insurance ›

Other Providers at the Same Location NPPES 2

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

LITTLE SAIGON OPTOMETRY A PROFESSIONAL CORPORATION
Optometrist
9567 BOLSA AVE
WESTMINSTER, CA 92683
Orange County (714) 775-8080
DR. THINH DUC DO OD
Optometrist
9567 BOLSA AVE
WESTMINSTER, CA 92683
Orange County (714) 775-8080

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diem Nguyen's NPI number?

The NPI number for Diem Nguyen is 1215020490. It was assigned to this individual provider in the NPPES registry on October 2, 2006.

Where is Diem Nguyen located?

Diem Nguyen practices at 9567 Bolsa Ave, Westminster, CA 92683. The listed phone number is (714) 775-8080.

What is Diem Nguyen's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

What insurance does Diem Nguyen accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Providence Health Plan list Diem Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Diem Nguyen was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.