Toan Nguyen, O.D.
NPI 1609122308 · Optometrist · San Marino, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Toan Nguyen, O.D. is a Optometrist provider in San Marino, CA (NPI 1609122308).
Provider details
- NPI number
- 1609122308
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 33446 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
192 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Photography of the Retina92250 | 52 | $39 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 38 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 37 | $136 |
| Photography of Content of Eyes92285 | 34 | $27 |
| Established Patient Complete Exam of Visual System92014 | 20 | $138 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$369 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
- 2012-07-31
- Last updated
- 2016-12-14
Frequently asked questions
- What is Toan Nguyen's NPI number?
- Toan Nguyen's National Provider Identifier (NPI) is 1609122308, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Toan Nguyen's specialty?
- Toan Nguyen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Toan Nguyen located?
- Toan Nguyen's practice location on file with NPPES is 2154 Huntington Dr, San Marino, CA 91108-2024.
- What is Toan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Toan Nguyen is (316) 990-1585.
- Does Toan Nguyen accept Medicare?
- Toan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Toan Nguyen's NPI active?
- Yes — Toan Nguyen's NPI (1609122308) is active in the NPPES registry as of the last update on 2016-12-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.