Son Nguyen, M.D.
NPI 1376593889 · Family Medicine Physician · San Bernardino, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Son Nguyen, M.D. is a Family Medicine Physician provider in San Bernardino, CA (NPI 1376593889).
Provider details
- NPI number
- 1376593889
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A49188 (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 · 90 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 432 | 169 |
| Metformin Hcl | 272 | 96 |
| Amlodipine Besylate | 265 | 96 |
| Lisinopril | 235 | 89 |
| Gabapentin | 194 | 68 |
| Levothyroxine Sodium | 177 | 71 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$649 across 25 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
- 2006-05-12
- Last updated
- 2015-06-04
Frequently asked questions
- What is Son Nguyen's NPI number?
- Son Nguyen's National Provider Identifier (NPI) is 1376593889, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Son Nguyen's specialty?
- Son Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Son Nguyen located?
- Son Nguyen's practice location on file with NPPES is 2150 N Waterman Ave, San Bernardino, CA 92404-4811.
- What is Son Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Son Nguyen is (909) 383-9385.
- Does Son Nguyen accept Medicare?
- Son Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Son Nguyen's NPI active?
- Yes — Son Nguyen's NPI (1376593889) is active in the NPPES registry as of the last update on 2015-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.