Theresa Nguyen, O.D.
NPI 1649406067 · Optometrist · Saint Louis, MO
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Nguyen, O.D. is a Optometrist provider in Saint Louis, MO (NPI 1649406067).
Provider details
- NPI number
- 1649406067
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 2617 (OK)
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 tenure33% of score
17 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$211 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
Additional practice locations (2)
- 7840 Natural Bridge Blvd Patient Care CenterSt Louis, MO 63121Phone: (314) 516-5131Fax: (314) 516-5507
- 3940 Lindell BlvdSaint Louis, MO 63108-3204Phone: (314) 516-5016Fax: (314) 535-4741
Registry dates
- Enumerated
- 2009-06-01
- Last updated
- 2019-12-09
- Certified
- 2019-12-09
Frequently asked questions
- What is Theresa Nguyen's NPI number?
- Theresa Nguyen's National Provider Identifier (NPI) is 1649406067, 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 1 Jefferson Barracks Dr, Saint Louis, MO 63125-4181.
- What is Theresa Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Theresa Nguyen is (314) 652-4100.
- 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 (1649406067) is active in the NPPES registry as of the last update on 2019-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.