Nhi Nguyen, O.D.
NPI 1841785326 · Optometrist · Corona, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nhi Nguyen, O.D. is a Optometrist provider in Corona, CA (NPI 1841785326).
Provider details
- NPI number
- 1841785326
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 33954 (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 tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
209 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) |
|---|---|---|
| Established Patient Problem Focused Exam of Visual System92012 | 68 | $96 |
| Imaging of Retina92134 | 48 | $42 |
| Established Patient Complete Exam of Visual System92014 | 44 | $135 |
| New Patient Complete Exam of Visual System92004 | 30 | $161 |
| Exam of Visual Field With Extended Testing92083 | 19 | $69 |
Typical Medicare-allowed amounts for these services range $42–$161 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 338 | 101 |
| Timolol Maleate | 119 | 31 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 41 | 15 |
| Brimonidine Tartrate | 36 | 11 |
| Netarsudil Mesylatebrand: Rhopressa | 16 | — |
| Lifitegrastbrand: Xiidra | 15 | — |
| Cyclosporine | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$569 across 12 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
Additional practice locations (1)
- 1 Mills Cir Ste 516Ontario, CA 91764-5211Phone: (909) 484-9030
Registry dates
- Enumerated
- 2018-06-26
- Last updated
- 2019-10-23
Frequently asked questions
- What is Nhi Nguyen's NPI number?
- Nhi Nguyen's National Provider Identifier (NPI) is 1841785326, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nhi Nguyen's specialty?
- Nhi Nguyen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Nhi Nguyen located?
- Nhi Nguyen's practice location on file with NPPES is 2620 Tuscany St Ste 103, Corona, CA 92881-4646.
- What is Nhi Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Nhi Nguyen is (951) 372-9623.
- Does Nhi Nguyen accept Medicare?
- Nhi Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nhi Nguyen's NPI active?
- Yes — Nhi Nguyen's NPI (1841785326) is active in the NPPES registry as of the last update on 2019-10-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.