John Trieu
NPI 1528478112 · Nurse Practitioner · Orange, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Trieu is a Nurse Practitioner provider in Orange, CA (NPI 1528478112).
Provider details
- NPI number
- 1528478112
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 95000352 (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
12 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
5 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.
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) |
|---|---|
| Mirtazapine | 25 |
| Trazodone Hcl | 23 |
| Ziprasidone Hcl | 18 |
| Paliperidone Palmitatebrand: Invega Sustenna | 14 |
| Sertraline Hcl | 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.
$2,113 across 95 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 (4)
- 4411 E Kings Canyon RdFresno, CA 93702-3604Phone: (559) 512-8708
- 11905 S Central Ave Ste 303Los Angeles, CA 90059-2897Phone: (323) 312-0145
- 12021 Wilmington Ave Bldg 10Los Angeles, CA 90059-3019Phone: (562) 295-4617
- 3737 Martin Luther King Jr Blvd Ste 515Lynwood, CA 90262-3517Phone: (323) 200-2550
Registry dates
- Enumerated
- 2014-05-05
- Last updated
- 2025-07-24
- Certified
- 2025-07-24
Frequently asked questions
- What is John Trieu's NPI number?
- John Trieu's National Provider Identifier (NPI) is 1528478112, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Trieu's specialty?
- John Trieu is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Trieu located?
- John Trieu's practice location on file with NPPES is 265 S Anita Dr Ste 102-104, Orange, CA 92868-3355.
- What is John Trieu's phone number?
- The practice phone number listed in the NPPES registry for John Trieu is (714) 410-3500.
- Does John Trieu accept Medicare?
- John Trieu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Trieu's NPI active?
- Yes — John Trieu's NPI (1528478112) is active in the NPPES registry as of the last update on 2025-07-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.