Theresa Nguyen, O.D.
NPI 1851727820 · Optometrist · Austin, TX
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Nguyen, O.D. is a Optometrist provider in Austin, TX (NPI 1851727820).
Provider details
- NPI number
- 1851727820
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 654 (NM)
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
12 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
218 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 | 80 | $90 |
| Established Patient Complete Exam of Visual System92014 | 72 | $126 |
| Exam of Visual Field With Extended Testing92083 | 22 | $64 |
| Closure of Tear Duct Opening Using Plug68761 | 17 | $211 |
| Photography of the Retina92250 | 15 | $34 |
| Imaging of Optic Nerve92133 | 12 | $37 |
Typical Medicare-allowed amounts for these services range $34–$211 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 33 | — |
| Cyclosporinebrand: Cequa | 32 | 17 |
| Latanoprostene Bunodbrand: Vyzulta | 30 | — |
| Lifitegrastbrand: Xiidra | 29 | 12 |
| Perfluorohexyloctane/Pfbrand: Miebo | 25 | 11 |
| Loteprednol Etabonatebrand: Lotemax Sm | 19 | 18 |
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 , 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.
$1,032 across 39 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)
- 7850 Jefferson St NeAlbuquerque, NM 87109-4315Phone: (505) 821-1457
Registry dates
- Enumerated
- 2013-09-22
- Last updated
- 2021-01-28
- Certified
- 2021-01-11
Frequently asked questions
- What is Theresa Nguyen's NPI number?
- Theresa Nguyen's National Provider Identifier (NPI) is 1851727820, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Nguyen's specialty?
- Theresa Nguyen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Theresa Nguyen located?
- Theresa Nguyen's practice location on file with NPPES is 901 S Mopac Expy, Austin, TX 78746.
- What is Theresa Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Theresa Nguyen is (512) 347-0255.
- Does Theresa Nguyen accept Medicare?
- Theresa Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Nguyen's NPI active?
- Yes — Theresa Nguyen's NPI (1851727820) is active in the NPPES registry as of the last update on 2021-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.