Margaret Nguyen
NPI 1831547009 · Optometrist · Downey, CA
Margaret Nguyen is a Optometrist provider in Downey, CA (NPI 1831547009).
Provider details
- NPI number
- 1831547009
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 15428 (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 tenure33% of score
10 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 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.
$164 across 3 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)
- 9191 Bolsa AveUnit 116Westminster, CA 92683-5564Phone: (714) 361-9785
Registry dates
- Enumerated
- 2016-05-29
- Last updated
- 2019-03-26
Frequently asked questions
- What is Margaret Nguyen's NPI number?
- Margaret Nguyen's National Provider Identifier (NPI) is 1831547009, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Nguyen's specialty?
- Margaret Nguyen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Margaret Nguyen located?
- Margaret Nguyen's practice location on file with NPPES is 9001 Apollo Way, Downey, CA 90242.
- What is Margaret Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Margaret Nguyen is (562) 803-0135.
- Is Margaret Nguyen's NPI active?
- Yes — Margaret Nguyen's NPI (1831547009) is active in the NPPES registry as of the last update on 2019-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.