Hai Nguyen, PA-C
NPI 1235411422 · Physician Assistant · Westminster, CA
Hai Nguyen, PA-C is a Physician Assistant provider in Westminster, CA (NPI 1235411422).
Provider details
- NPI number
- 1235411422
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA 21659 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
14 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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 28 | 13 |
| Alendronate Sodium | 16 | — |
| Progesterone, Micronizedbrand: Progesterone | 15 | — |
| Estradiol/Norethindrone Acetbrand: Combipatch | 11 | — |
| Fluconazole | 11 | — |
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.
$430 across 20 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
- 2011-09-13
- Last updated
- 2011-09-13
Frequently asked questions
- What is Hai Nguyen's NPI number?
- Hai Nguyen's National Provider Identifier (NPI) is 1235411422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hai Nguyen's specialty?
- Hai Nguyen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Hai Nguyen located?
- Hai Nguyen's practice location on file with NPPES is 10301 Bolsa Ave, Westminster, CA 92683-6784.
- What is Hai Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Hai Nguyen is (714) 418-9749.
- Is Hai Nguyen's NPI active?
- Yes — Hai Nguyen's NPI (1235411422) is active in the NPPES registry as of the last update on 2011-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.