Trieu Nguyen, MD
NPI 1578634457 · Family Medicine Physician · Garden Grove, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Trieu Nguyen, MD is a Family Medicine Physician provider in Garden Grove, CA (NPI 1578634457).
Provider details
- NPI number
- 1578634457
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A70864 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 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 |
|---|---|---|
| Prednisone | 99 | 98 |
| Budesonide/Formoterol Fumaratebrand: Breyna | 79 | 68 |
| Doxycycline Monohydrate | 51 | 51 |
| Cephalexin | 42 | 42 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 25 | 25 |
| Mupirocin | 22 | 22 |
| Sulindac | 20 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$102 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
- 2006-11-13
- Last updated
- 2021-11-29
Frequently asked questions
- What is Trieu Nguyen's NPI number?
- Trieu Nguyen's National Provider Identifier (NPI) is 1578634457, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Trieu Nguyen's specialty?
- Trieu Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Trieu Nguyen located?
- Trieu Nguyen's practice location on file with NPPES is 12100 Euclid St, Garden Grove, CA 92840-3304.
- What is Trieu Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Trieu Nguyen is (714) 741-3568.
- Does Trieu Nguyen accept Medicare?
- Trieu Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Trieu Nguyen's NPI active?
- Yes — Trieu Nguyen's NPI (1578634457) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.