Alex Nguyen
NPI 1407378953 · Family Medicine Physician · Oceanside, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alex Nguyen is a Family Medicine Physician provider in Oceanside, CA (NPI 1407378953).
Provider details
- NPI number
- 1407378953
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
8 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
2 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 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 42 | 23 |
| Losartan Potassium | 41 | 17 |
| Prednisone | 28 | 27 |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide | 26 | 16 |
| Amlodipine Besylate | 26 | 11 |
| Triamcinolone Acetonide | 24 | 16 |
| Meloxicam | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$151 across 2 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 (1)
- 11500 Brookshire AveDowney, CA 90241-4917Phone: (562) 904-5000
Registry dates
- Enumerated
- 2017-07-16
- Last updated
- 2023-11-01
- Certified
- 2021-08-27
Frequently asked questions
- What is Alex Nguyen's NPI number?
- Alex Nguyen's National Provider Identifier (NPI) is 1407378953, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alex Nguyen's specialty?
- Alex Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alex Nguyen located?
- Alex Nguyen's practice location on file with NPPES is 200 Mercy Cir, Oceanside, CA 92055-9205.
- What is Alex Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Alex Nguyen is (714) 642-5628.
- Does Alex Nguyen accept Medicare?
- Alex Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alex Nguyen's NPI active?
- Yes — Alex Nguyen's NPI (1407378953) is active in the NPPES registry as of the last update on 2023-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.