Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. WILLIAM DOAN NGUYEN OD
NPI 1689564486
Optometrist in San Francisco, CA

Q: What is William Doan Nguyen's NPI number?

The NPI number for William Doan Nguyen is 1689564486. It was assigned to this individual provider in the NPPES registry on July 4, 2025.

Q: What is William Doan Nguyen's specialty?

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

Active since July 04, 2025PECOS Enrolled

490 ILLINOIS ST, SAN FRANCISCO, CA 94158(415) 530-6123 Get Directions Write a Review

NPPES record last updated: July 17, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 17, 2026, Jul 10, 2026, Jul 8, 2025 and 1 more (4 updates tracked since 2025).

On this page

About Dr. William Doan Nguyen Od NPPES

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

DR. WILLIAM DOAN NGUYEN OD (NPI 1689564486) is an individual optometrist in San Francisco, California, licensed in California (36323) and active in the NPI registry since July 2025. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2025).

NPPES Registry Identity

NPI1689564486

Entity TypeIndividualMale

Primary Taxonomy152W00000X

Provider Legal NameDR. WILLIAM DOAN NGUYENCredential: OD

Location Address490 ILLINOIS STSan Francisco, CA 94158

Mailing Address1825 4th St, Ucsf Medical Center, Peds Ophthalmology Box 0735San Francisco, CA 94143-2350 · (415) 530-6123

Phone(415) 530-6123

Sole ProprietorYes

Medical School CMSOtherGraduated 2025

Enumeration DateJuly 4, 2025

Last NPPES UpdateJuly 17, 20264 updates tracked since enumeration

NPPES CertifiedJuly 17, 2026

✔ NPI 1689564486 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

Licenses✔ Licensed in CA · 36323✔ Licensed in NY · 011250

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.

Also ListedOptometrist · Low Vision RehabilitationTaxonomy 152WL0500X · License 011250 (NY)

490 ILLINOIS ST, San Francisco, CA 94158

Open in Google Maps ↗

Secondary Practice Locations 2

Location 1490 Illinois StSan Francisco, CA 94158 · Phone (415) 530-6123

Location 21825 4th St, UCSF Medical Center, Peds Ophthalmology Box 0735San Francisco, CA 94143-2350 · Phone (415) 530-6123

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Doan Nguyen Od is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8224525548

PECOS Enrollment IDI20251013000318

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94158 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 19

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

DR. ADRIAN C TSANG MD

Ophthalmology (Uveitis and Ocular Inflammatory Disease)