John Nguyen, M.D.
NPI 1154308963 · Obstetrics & Gynecology Physician · Porterville, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Nguyen, M.D. is a Obstetrics & Gynecology Physician provider in Porterville, CA (NPI 1154308963).
Provider details
- NPI number
- 1154308963
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C181720 (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
20 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 48 | 26 |
| Fluticasone Propionate | 21 | 21 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 16 |
| Methylprednisolone | 16 | 13 |
| Mirabegronbrand: Myrbetriq | 14 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 12 | — |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$157 across 8 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
Registry dates
- Enumerated
- 2005-12-22
- Last updated
- 2024-03-27
- Certified
- 2023-08-16
Frequently asked questions
- What is John Nguyen's NPI number?
- John Nguyen's National Provider Identifier (NPI) is 1154308963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Nguyen's specialty?
- John Nguyen is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is John Nguyen located?
- John Nguyen's practice location on file with NPPES is 590 W Putnam Ave, Porterville, CA 93257-3257.
- What is John Nguyen's phone number?
- The practice phone number listed in the NPPES registry for John Nguyen is (559) 781-3700.
- Does John Nguyen accept Medicare?
- John Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Nguyen's NPI active?
- Yes — John Nguyen's NPI (1154308963) is active in the NPPES registry as of the last update on 2024-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.