Trung Nguyen, M.D.
NPI 1316941966 · Ophthalmology Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Trung Nguyen, M.D. is a Ophthalmology Physician provider in Fountain Valley, CA (NPI 1316941966).
Provider details
- NPI number
- 1316941966
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G079014 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 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
8,101 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 | 1,048 | $41 |
| Established Patient Problem Focused Exam of Visual System92012 | 988 | $99 |
| Established Patient Complete Exam of Visual System92014 | 914 | $139 |
| Extended Exam of the Back Part of the Eye With Optic Nerve Drawing92202 | 747 | $16 |
| Imaging of Optic Nerve92133 | 744 | $37 |
| Imaging of Front Third of Eye92132 | 741 | $31 |
| Exam of Visual Field With Extended Testing |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cyclosporinebrand: Cequa | 775 | 174 |
| Cyclosporinebrand: Restasis | 590 | 148 |
| Lifitegrastbrand: Xiidra | 482 | 113 |
| Varenicline Tartratebrand: Tyrvaya | 263 | 68 |
| Cyclosporine | 255 | 80 |
| Netarsudil Mesylat/Latanoprostbrand: Rocklatan | 239 | 44 |
| Bimatoprostbrand: Lumigan | 218 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,141 across 57 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
- 2005-06-10
- Last updated
- 2016-10-19
Frequently asked questions
- What is Trung Nguyen's NPI number?
- Trung Nguyen's National Provider Identifier (NPI) is 1316941966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Trung Nguyen's specialty?
- Trung Nguyen is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Trung Nguyen located?
- Trung Nguyen's practice location on file with NPPES is 11180 Warner Ave, Fountain Valley, CA 92708-7515.
- What is Trung Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Trung Nguyen is (714) 444-0303.
- Does Trung Nguyen accept Medicare?
- Trung Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Trung Nguyen's NPI active?
- Yes — Trung Nguyen's NPI (1316941966) is active in the NPPES registry as of the last update on 2016-10-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.