Harry Trieu, MD
NPI 1518616457 · Student in an Organized Health Care Education/Training Program · Orange, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harry Trieu, MD is a Student in an Organized Health Care Education/Training Program provider in Orange, CA (NPI 1518616457).
Provider details
- NPI number
- 1518616457
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 23 | — |
| Lisinopril | 22 | — |
| Atorvastatin Calcium | 21 | 13 |
| Metformin Hcl | 13 | — |
| Gabapentin | 12 | — |
| Empagliflozinbrand: Jardiance | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-03-19
- Last updated
- 2025-07-06
- Certified
- 2025-07-06
Frequently asked questions
- What is Harry Trieu's NPI number?
- Harry Trieu's National Provider Identifier (NPI) is 1518616457, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harry Trieu's specialty?
- Harry Trieu is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Harry Trieu located?
- Harry Trieu's practice location on file with NPPES is 3800 W Chapman Ave Ste 6400, Orange, CA 92868-1641.
- What is Harry Trieu's phone number?
- The practice phone number listed in the NPPES registry for Harry Trieu is (714) 456-6745.
- Does Harry Trieu accept Medicare?
- Harry Trieu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harry Trieu's NPI active?
- Yes — Harry Trieu's NPI (1518616457) is active in the NPPES registry as of the last update on 2025-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.