NPPES file of Aug 9, 2026

Thao Phuong Nguyen, O.D.

Optometrist · Garden Grove, CA

Thao Phuong Nguyen, O.D. is an optometrist with a practice address in Garden Grove, California, and NPI 1922123561, issued on Mar 20, 2007. Check the license (California OPT 10149 TPA, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1922123561
Name
Thao Phuong Nguyen
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
OPT 10149 TPA CA
Self-reported in NPPES; status is on the state search
Practice location
14322 Brookhurst St, Garden Grove, CA 92843
Phone
(714) 839-9996
Enumerated
Mar 20, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
SD0101490 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Thao Phuong Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license OPT 10149 TPA
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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94% fewer Medicare Part D claims than the average optometrist in 2024

16 Medicare Part D claims, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.

  1. Thao Nguyen16
  2. Specialty average277

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Thao Phuong Nguyen among 8,308 optometrist records in California

Thao Phuong Nguyen, O.D. is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 34% of them.

  • NPI issued2007 · 34% of these records are older, 46% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 43% of these records are
  • Record last updated2007 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

48 optometrist records list a practice address in Garden Grove

They are 48 of the 4,572 NPPES records with a practice address in Garden Grove, and 8,308 optometrist records in California.

The 8 optometrist records with the nearest ZIP codes

  1. Sally Dang, ODGarden Grove, CA 928431710091491
  2. Phi Doan, O.D.Garden Grove, CA 928431194878926
  3. Tammy Luu, ODGarden Grove, CA 928431295254746
  4. Jordene Ngo, ODGarden Grove, CA 928431821821208
  5. Nikki Nguyen, O.D.Garden Grove, CA 928431912089442
  6. Mai Huong Nguyen, ODGarden Grove, CA 928431811050768
  7. Ngoc-Thuy Nguyen, O.D.Garden Grove, CA 928431063579688
  8. Leinah Nguyen, O.D.Garden Grove, CA 928431962805168

Common questions

What is Thao Phuong Nguyen, O.D.'s NPI number?

Thao Phuong Nguyen, O.D.'s National Provider Identifier (NPI) is 1922123561, issued on Mar 20, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Thao Phuong Nguyen, O.D. located?

The NPPES record lists a practice address at 14322 Brookhurst St, Garden Grove, CA, 92843. Phone: (714) 839-9996. Providers update this record themselves, so call before visiting.

How can I verify Thao Phuong Nguyen, O.D.'s license?

NPPES lists California license number OPT 10149 TPA, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Thao Phuong Nguyen, O.D. prescribe under Medicare Part D?

In 2024, Thao Phuong Nguyen, O.D. had 16 Medicare Part D claims; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.