Peter Nguyen, DO
NPI 1538240734 · Otolaryngology/Facial Plastic Surgery Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Nguyen, DO is a Otolaryngology/Facial Plastic Surgery Physician provider in Fountain Valley, CA (NPI 1538240734).
Provider details
- NPI number
- 1538240734
- Entity type
- Individual
- Primary specialty
- Otolaryngology/Facial Plastic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A9575 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
467 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 181 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 95 | $98 |
| Removal of Impacted Ear Wax69210 | 64 | $50 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 47 | $179 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 25 | $120 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 234 | 86 |
| Levothyroxine Sodium | 81 | 12 |
| Ipratropium Bromide | 69 | 33 |
| Cephalexin | 42 | 40 |
| Tramadol Hcl | 40 | 37 |
| Omeprazole | 29 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 28 | 25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-17
- Last updated
- 2021-01-28
- Certified
- 2021-01-28
Frequently asked questions
- What is Peter Nguyen's NPI number?
- Peter Nguyen's National Provider Identifier (NPI) is 1538240734, 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 Otolaryngology/Facial Plastic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Nguyen located?
- Peter Nguyen's practice location on file with NPPES is 18111 Brookhurst St Ste 5400, Fountain Valley, CA 92708-6728.
- What is Peter Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Peter Nguyen is (714) 378-5577.
- 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 (1538240734) is active in the NPPES registry as of the last update on 2021-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.