ISTYLE OPTOMETRY
NPI 1972039188
Optometrist - Corneal and Contact Management in Fountain Valley, CA

Q: What is Dieu Nga Truong & Tra Mi Truong Optometry Inc's specialty?

The primary specialty registered for this NPI is Optometrist, specializing in Corneal and Contact Management, with taxonomy code 152WC0802X.

Active since May 08, 2017

9430 WARNER AVE STE M, FOUNTAIN VALLEY, CA 92708(714) 377-2020(714) 377-2021 Get Directions Write a Review

NPPES record last updated: May 8, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Istyle Optometry NPPES

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

ISTYLE OPTOMETRY (NPI 1972039188) is a healthcare organization registered as a corneal and contact management in Fountain Valley, California and active in the NPI registry since May 2017. The organization lists Tra Mi Thi Truong, Optometrist/cfo, as its authorized official.

NPPES Registry Identity

NPI1972039188

Entity TypeOrganization

Primary Taxonomy152WC0802X

Legal Business NameDIEU NGA TRUONG & TRA MI TRUONG OPTOMETRY INC

Location Address9430 WARNER AVE STE MFountain Valley, CA 92708-2826

Mailing Address9430 Warner Ave Ste MFountain Valley, CA 92708-2826 · (714) 377-2020 · Fax (714) 377-2021

Phone(714) 377-2020

Fax(714) 377-2021

Organization SubpartNo

Authorized OfficialTra Mi Thi TruongOptometrist/cfo · (714) 507-8222

Enumeration DateMay 8, 2017

✔ NPI 1972039188 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOptometrist · Corneal and Contact ManagementEye and Vision Services Providers

Taxonomy Code152WC0802X

License✔ Licensed in CA · 10459T

Definition

The professional activities performed by an Optometrist related to the fitting of contact lenses to an eye, ongoing evaluation of the cornea's ability to sustain successful contact lens wear, and treatment of any external eye or corneal condition which can affect contact lens wear.

Also ListedOptometristTaxonomy 152W00000X · License 9962T (CA)

9430 WARNER AVE STE M, Fountain Valley, CA 92708

Open in Google Maps ↗

Other Names 1

Doing Business AsIstyle Optometry

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 MULTIPLE SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Louisiana, Blue Cross Blue Shield of Wyoming.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Istyle Optometry 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 Istyle Optometry, which bills Medicare for the services this clinician delivers.

Clinician (1)

Tra Mi Thi Truong, O.D.

Optometry

NPI 1760527311

9430 WARNER AVE STE M
Fountain Valley, CA 92708

(714) 377-2020

✔ PECOS0.1 mi

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 Dieu Nga Truong & Tra Mi Truong Optometry Inc's NPI number?

The NPI number for Dieu Nga Truong & Tra Mi Truong Optometry Inc is 1972039188. It was assigned to this organization in the NPPES registry on May 8, 2017. The provider is doing business as Istyle Optometry.

Where is Dieu Nga Truong & Tra Mi Truong Optometry Inc located?

Dieu Nga Truong & Tra Mi Truong Optometry Inc is located at 9430 Warner Ave Ste M, Fountain Valley, CA 92708. The listed phone number is (714) 377-2020.

What is Dieu Nga Truong & Tra Mi Truong Optometry Inc's specialty?

The primary specialty registered for this NPI is Optometrist, specializing in Corneal and Contact Management, with taxonomy code 152WC0802X.

Is Dieu Nga Truong & Tra Mi Truong Optometry Inc enrolled in Medicare?

Yes. Dieu Nga Truong & Tra Mi Truong Optometry Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Dieu Nga Truong & Tra Mi Truong Optometry Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Optometry) reassigns their Medicare billing to Dieu Nga Truong & Tra Mi Truong Optometry 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.

What insurance does Dieu Nga Truong & Tra Mi Truong Optometry Inc accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming and Blue Cross and Blue Shield of Louisiana list Dieu Nga Truong & Tra Mi Truong Optometry Inc 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 Dieu Nga Truong & Tra Mi Truong Optometry Inc was last updated on May 8, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.