Rosanna Nguyen, O.D.
NPI 1043574742 · Optometrist · Valencia, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rosanna Nguyen, O.D. is a Optometrist provider in Valencia, CA (NPI 1043574742).
Provider details
- NPI number
- 1043574742
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 14398 (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
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
712 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) |
|---|---|---|
| Ct Scan of Cornea92025 | 239 | $40 |
| Established Patient Problem Focused Exam of Visual System92012 | 179 | $99 |
| Photography of the Retina92250 | 107 | $38 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 99 | $98 |
| Microfluid Analysis of Tears83861 | 41 | $22 |
| New Patient Problem Focused Exam of Visual System92002 | 35 | $95 |
| Established Patient Complete Exam of Visual System |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 17 | 15 |
| Erythromycin Basebrand: Erythromycin | 14 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$143 across 6 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
- 2012-06-27
- Last updated
- 2024-01-31
- Certified
- 2024-01-31
Frequently asked questions
- What is Rosanna Nguyen's NPI number?
- Rosanna Nguyen's National Provider Identifier (NPI) is 1043574742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rosanna Nguyen's specialty?
- Rosanna Nguyen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Rosanna Nguyen located?
- Rosanna Nguyen's practice location on file with NPPES is 27420 Tourney Rd Ste 100, Valencia, CA 91355-5631.
- What is Rosanna Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Rosanna Nguyen is (661) 259-3937.
- Does Rosanna Nguyen accept Medicare?
- Rosanna Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rosanna Nguyen's NPI active?
- Yes — Rosanna Nguyen's NPI (1043574742) is active in the NPPES registry as of the last update on 2024-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.