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THIEN-ANH CAO OD
NPI 1093208985
Optometrist in Garden Grove, CA

Active since June 14, 2018PECOS Enrolled
9856 WESTMINSTER AVE STE 125, GARDEN GROVE, CA 92844(714) 530-0751 Get Directions Write a Review

NPPES record last updated: July 13, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 13, 2024, Jun 14, 2018 (2 updates tracked since 2018).

About Thien-anh Cao Od NPPES

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

THIEN-ANH CAO OD (NPI 1093208985) is an individual optometrist in Garden Grove, California, licensed in California (33938TLG) and active in the NPI registry since June 2018. She is enrolled in Medicare PECOS and maintains a secondary practice location in Garden Grove.

NPPES Registry Identity

NPI1093208985
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameTHIEN-ANH CAOCredential: OD
Location Address9856 WESTMINSTER AVE STE 125Garden Grove, CA 92844-5143
Mailing Address9856 Westminster Ave Ste 125Garden Grove, CA 92844-5143 · (714) 530-0751
Phone(714) 530-0751
Sole ProprietorYes
Enumeration DateJune 14, 2018
Last NPPES UpdateJuly 13, 20242 updates tracked since enumeration
NPPES CertifiedJuly 13, 2024
✔ NPI 1093208985 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 · 33938TLG
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.
9856 WESTMINSTER AVE STE 125, Garden Grove, CA 92844
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Secondary Practice Location 1

Location 110872 Westminster Ave Ste 112Garden Grove, CA 92843-4981 · Phone (714) 636-9585

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 and Blue Shield of Montana and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thien-anh Cao Od is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Thien-anh Cao reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Nvision Optometry, A Professional Corp.
Same address
Optometrist
9856 WESTMINSTER AVE, STE.125
Garden Grove, CA 92844
  • Reassigned Medicare billing, California enrollment
  • 2 clinicians in this Medicare group
NPI 1780056325 (714) 530-0751

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92844 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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.

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 Thien-anh Cao's NPI number?

The NPI number for Thien-anh Cao is 1093208985. It was assigned to this individual provider in the NPPES registry on June 14, 2018.

Where is Thien-anh Cao located?

Thien-anh Cao practices at 9856 Westminster Ave Ste 125, Garden Grove, CA 92844. The listed phone number is (714) 530-0751.

What is Thien-anh Cao's specialty?

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

Is Thien-anh Cao enrolled in Medicare?

Yes. Thien-anh Cao is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thien-anh Cao's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thien-anh Cao reassigns Medicare benefits to Nvision Optometry, A Professional Corp. (Garden Grove, CA). The 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 Thien-anh Cao's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thien-anh Cao accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 2 other insurers list Thien-anh Cao 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 Thien-anh Cao was last updated on July 13, 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.