Theresa Nguyen, D.O.
NPI 1427206093 · Ophthalmology Physician · Redwood City, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Nguyen, D.O. is a Ophthalmology Physician provider in Redwood City, CA (NPI 1427206093).
Provider details
- NPI number
- 1427206093
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125051600 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
17 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 210 | 123 |
| Latanoprost | 200 | 78 |
| Polymyxin B Sulf/Trimethoprimbrand: Polymyxin B Sul-Trimethoprim | 120 | 89 |
| Fluorometholone | 107 | 37 |
| Timolol Maleate | 105 | 34 |
| Cyclosporine | 76 | 22 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 64 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$149 across 1 record (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
- 2008-09-08
- Last updated
- 2024-08-14
- Certified
- 2024-08-14
Frequently asked questions
- What is Theresa Nguyen's NPI number?
- Theresa Nguyen's National Provider Identifier (NPI) is 1427206093, 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 Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Theresa Nguyen located?
- Theresa Nguyen's practice location on file with NPPES is 905 Maple St, Redwood City, CA 94063-2057.
- What is Theresa Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Theresa Nguyen is (650) 299-2066.
- 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 (1427206093) is active in the NPPES registry as of the last update on 2024-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.