Thien Nguyen, O.D.
NPI 1568471373 · Optometrist · Montebello, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thien Nguyen, O.D. is a Optometrist provider in Montebello, CA (NPI 1568471373).
Provider details
- NPI number
- 1568471373
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Female
- Sole proprietor
- No
- License
- OPT 13098 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lifitegrastbrand: Xiidra | 120 | 77 |
| Cyclosporine | 83 | 31 |
| Cyclosporinebrand: Restasis | 49 | 19 |
| Loteprednol Etabonatebrand: Eysuvis | 34 | 34 |
| Cyclosporinebrand: Cequa | 32 | 18 |
| Erythromycin Basebrand: Erythromycin | 31 | 18 |
| Latanoprost | 23 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$225 across 15 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-08
- Last updated
- 2009-02-10
Frequently asked questions
- What is Thien Nguyen's NPI number?
- Thien Nguyen's National Provider Identifier (NPI) is 1568471373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thien Nguyen's specialty?
- Thien Nguyen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Thien Nguyen located?
- Thien Nguyen's practice location on file with NPPES is 2446 W Whittier Blvd, Montebello, CA 90640-3041.
- What is Thien Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Thien Nguyen is (323) 728-5500.
- Does Thien Nguyen accept Medicare?
- Thien Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thien Nguyen's NPI active?
- Yes — Thien Nguyen's NPI (1568471373) is active in the NPPES registry as of the last update on 2009-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.