Tammy Nguyen, PA-C
NPI 1073980843 · Physician Assistant · Santa Ana, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Nguyen, PA-C is a Physician Assistant provider in Santa Ana, CA (NPI 1073980843).
Provider details
- NPI number
- 1073980843
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 52707 (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
10 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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 108 | 41 |
| Ciprofloxacin Hcl/Dexamethbrand: Ciprofloxacin-Dexamethasone | 38 | 29 |
| Fluticasone Propionate | 38 | 11 |
| Fluocinonide | 34 | 27 |
| Ipratropium Bromide | 29 | 13 |
| Omeprazole | 18 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 14 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 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
- 2015-08-28
- Last updated
- 2021-12-03
Frequently asked questions
- What is Tammy Nguyen's NPI number?
- Tammy Nguyen's National Provider Identifier (NPI) is 1073980843, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Nguyen's specialty?
- Tammy Nguyen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Nguyen located?
- Tammy Nguyen's practice location on file with NPPES is 1610 W Edinger Ave, Santa Ana, CA 92704-4339.
- What is Tammy Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tammy Nguyen is (714) 641-1610.
- Does Tammy Nguyen accept Medicare?
- Tammy Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Nguyen's NPI active?
- Yes — Tammy Nguyen's NPI (1073980843) is active in the NPPES registry as of the last update on 2021-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.