THAO NGUYEN M D INC
NPI 1558898171
Ophthalmology in San Diego, CA

Q: What is Thao Nguyen M D Inc's NPI number?

The NPI number for Thao Nguyen M D Inc is 1558898171. It was assigned to this organization in the NPPES registry on May 12, 2017. The provider was formerly known as Thao Nguyen MD Inc.

Q: What is Thao Nguyen M D Inc's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Active since May 12, 2017

2406 ULRIC ST, SAN DIEGO, CA 92111(858) 278-9393(858) 278-5393 Get Directions Write a Review

NPPES record last updated: June 6, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 6, 2024, May 12, 2017 (2 updates tracked since 2017).

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About Thao Nguyen M D Inc NPPES

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

THAO NGUYEN M D INC (NPI 1558898171), doing business as Thao Nguyen Md Inc, is a healthcare organization registered as an ophthalmology in San Diego, California and active in the NPI registry since May 2017. The organization lists Thao P Nguyen, Owner/medical Doctor, as its authorized official.

NPPES Registry Identity

NPI1558898171

Entity TypeOrganization

Primary Taxonomy207W00000X

Legal Business NameTHAO NGUYEN M D INC

Location Address2406 ULRIC STSan Diego, CA 92111-6040

Mailing AddressPo Box 420988San Diego, CA 92142-0988 · (858) 278-9393 · Fax (858) 278-5393

Phone(858) 278-9393

Fax(858) 278-5393

Organization SubpartNo

Authorized OfficialThao P NguyenOwner/medical Doctor · (858) 610-9393

Enumeration DateMay 12, 2017

Last NPPES UpdateJune 6, 20242 updates tracked since enumeration

✔ NPI 1558898171 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in CA · G81689

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

2406 ULRIC ST, San Diego, CA 92111

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Other Names 1

Former Legal Business NameThao Nguyen Md Inc

Other Identifiers 1

Medicaid00G816890CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thao Nguyen M D Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Thao Nguyen M D Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Thao Nguyen, M D

Ophthalmology

NPI 1154352185

2406 ULRIC ST
San Diego, CA 92111

(858) 278-9393

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Thao Nguyen M D Inc's NPI number?

The NPI number for Thao Nguyen M D Inc is 1558898171. It was assigned to this organization in the NPPES registry on May 12, 2017. The provider was formerly known as Thao Nguyen MD Inc.

Where is Thao Nguyen M D Inc located?

Thao Nguyen M D Inc is located at 2406 Ulric St, San Diego, CA 92111. The listed phone number is (858) 278-9393.

What is Thao Nguyen M D Inc's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Thao Nguyen M D Inc enrolled in Medicare?

Yes. Thao Nguyen M D Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Thao Nguyen M D Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Ophthalmology) reassigns their Medicare billing to Thao Nguyen M D Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Thao Nguyen M D Inc was last updated on June 6, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.