Thien T. Nguyen, O.D.
Optometrist · Montebello, CA
Thien T. Nguyen, O.D. is an optometrist with a practice address in Montebello, California, and NPI 1568471373, issued on Aug 8, 2006. Check the license (California OPT 13098, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Thien T. Nguyen
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT 13098 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2446 W Whittier Blvd, Montebello, CA 90640
- Phone
- (323) 728-5500
- Enumerated
- Aug 8, 2006
- Record last updated
- Feb 10, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (323) 728-4408
- Medicare enrollment
- Enrolled (PECOS I20061122000236); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 2446 W Whittier Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Albert De La Pena, M.D.Ophthalmology Physician1649295114
- William De La Pena, M.D.Ophthalmology Physician1598784415
- Richard Foulkes, M.D,Ophthalmology Physician1932312063
Verify Thien T. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT 13098Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% more Medicare Part D claims than the average optometrist in 2024
455 Medicare Part D claims for 189 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 81% of claims.
Most prescribed
- Xiidra120 claims
- Cyclosporine83 claims
- Restasis49 claims
- Eysuvis34 claims
- Cequa32 claims
- Erythromycin31 claims
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.
Industry payments in 2024: $224.54
15 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- First Choice Physician PartnersPlacentia, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thien T. Nguyen among 8,308 optometrist records in California
Thien T. 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 66% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2005 · median 2008 among the 3,573 with a school on file
- Record last updated2009 · 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).
27 optometrist records list a practice address in Montebello
They are 27 of the 728 NPPES records with a practice address in Montebello, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Montebello → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- David Duenas, O.D.Montebello, CA 906401750451985
- Makkasen Em, ODMontebello, CA 906401205988656
- Catherine Huang, O.D.Montebello, CA 906401518976448
- Harold Masuda, O.D.Montebello, CA 906401780614545
- Todd Mishima, ODMontebello, CA 906401841215365
- Evelyn Perez, ODMontebello, CA 906401124101084
- David Reynolds, O.D.Montebello, CA 906401255493946
- Martha Sanchez, O.D.Montebello, CA 906401336282318
Common questions
What is Thien T. Nguyen, O.D.'s NPI number?
Thien T. Nguyen, O.D.'s National Provider Identifier (NPI) is 1568471373, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thien T. Nguyen, O.D. located?
The NPPES record lists a practice address at 2446 W Whittier Blvd, Montebello, CA, 90640. Phone: (323) 728-5500. Providers update this record themselves, so call before visiting.
How can I verify Thien T. Nguyen, O.D.'s license?
NPPES lists California license number OPT 13098, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Thien T. Nguyen, O.D. prescribe under Medicare Part D?
In 2024, Thien T. Nguyen, O.D. had 455 Medicare Part D claims for 189 beneficiaries; 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.