Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

DR. MAI HOANG PHUONG NGUYEN OD
NPI 1811893084
Optometrist in Walnut Creek, CA

Q: What is Mai Nguyen's NPI number?

The NPI number for Mai Nguyen is 1811893084. It was assigned to this individual provider in the NPPES registry on October 15, 2026.

Q: What is Mai Nguyen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mai Nguyen was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 days 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.

Active since October 15, 2026

1844 SAN MIGUEL DR STE 312, WALNUT CREEK, CA 94596(925) 934-4313 Get Directions Write a Review

NPPES record added: October 15, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Mai Hoang Phuong Nguyen Od NPPES

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

DR. MAI HOANG PHUONG NGUYEN OD (NPI 1811893084) is an individual optometrist in Walnut Creek, California, licensed in California (36409) and active in the NPI registry since October 2026. She maintains a secondary practice location in Vallejo.

NPPES Registry Identity

NPI1811893084

Entity TypeIndividualFemale

Primary Taxonomy152W00000X

Provider Legal NameDR. MAI HOANG PHUONG NGUYENCredential: OD

Location Address1844 SAN MIGUEL DR STE 312Walnut Creek, CA 94596-4963

Mailing Address1022 Bancroft RdConcord, CA 94518-3913 · (925) 964-5465

Phone(925) 934-4313

Sole ProprietorNo

Enumeration DateOctober 15, 2026

NPPES CertifiedOctober 15, 2026

✔ NPI 1811893084 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 · 36409

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.

1844 SAN MIGUEL DR STE 312, Walnut Creek, CA 94596

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Secondary Practice Location 1

Location 12103 Redwood St Ste 100Vallejo, CA 94590-3608 · Phone (707) 554-1773

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 Mai Nguyen's NPI number?

The NPI number for Mai Nguyen is 1811893084. It was assigned to this individual provider in the NPPES registry on October 15, 2026.

Where is Mai Nguyen located?

Mai Nguyen practices at 1844 San Miguel Dr Ste 312, Walnut Creek, CA 94596. The listed phone number is (925) 934-4313.

What is Mai Nguyen's specialty?

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

When was this NPI record last updated?

The NPPES record for Mai Nguyen was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 days 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.