Peter Nguyen, D.O.
NPI 1871933366 · Emergency Medicine Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Nguyen, D.O. is a Emergency Medicine Physician provider in Irvine, CA (NPI 1871933366).
Provider details
- NPI number
- 1871933366
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A14978 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefadroxil | 138 | 138 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 133 | 132 |
| Ciprofloxacin Hcl | 43 | 42 |
| Ondansetronbrand: Ondansetron Odt | 35 | 35 |
| Doxycycline Monohydrate | 34 | 34 |
| Cephalexin | 23 | 23 |
| Cefpodoxime Proxetil | 22 | 22 |
Practice location
Mailing address
Additional practice locations (2)
- 1500 Duarte RdDuarte, CA 91010-3012Phone: (800) 826-4673
- 2420 S State StTacoma, WA 98405-2845Phone: (510) 867-2515Fax: (510) 867-2515
Registry dates
- Enumerated
- 2013-06-27
- Last updated
- 2025-11-24
- Certified
- 2025-11-24
Frequently asked questions
- What is Peter Nguyen's NPI number?
- Peter Nguyen's National Provider Identifier (NPI) is 1871933366, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Nguyen's specialty?
- Peter Nguyen is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Nguyen located?
- Peter Nguyen's practice location on file with NPPES is 1000 Fivepoint, Irvine, CA 92618-2377.
- What is Peter Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Peter Nguyen is (888) 333-4673.
- Does Peter Nguyen accept Medicare?
- Peter Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Nguyen's NPI active?
- Yes — Peter Nguyen's NPI (1871933366) is active in the NPPES registry as of the last update on 2025-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.