NPPES file of Aug 9, 2026

Son Ngoc Nguyen, M.D.

Family Medicine Physician · San Bernardino, CA

Son Ngoc Nguyen, M.D. is a family medicine physician with a practice address in San Bernardino, California, and NPI 1376593889, issued on May 12, 2006. Check the license (California A49188, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1376593889
Name
Son Ngoc Nguyen
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A49188 CA
Self-reported in NPPES; status is on the state search
Practice location
2150 N Waterman Ave, San Bernardino, CA 92404
Phone
(909) 383-9385
Enumerated
May 12, 2006
Record last updated
Jun 4, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(909) 882-2463
Medicaid IDs
1376593889 CA
1235318445 CA
Medicare enrollment
Enrolled (PECOS I20081211000055); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 2150 N Waterman Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kofi Adade-Boafo, M.D.Pediatrics Physician1003898792
  2. Rolando Cadiz, M.D.Family Medicine Physician1427084185
  3. Raymond Cervenka, PAPhysician Assistant1497965529
  4. Arthur Friedman, O.D.Optometrist1033195888
  5. Brandon Friedman, O.D.Optometrist1619288115
  6. Michael Huang, O.D.Optometrist1346226123

Verify Son Ngoc Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A49188    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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52% more Medicare Part D claims than the average family medicine physician in 2024

5,400 Medicare Part D claims for 673 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Son Nguyen5,400
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium432 claims
  2. Metformin Hcl272 claims
  3. Amlodipine Besylate265 claims
  4. Lisinopril235 claims
  5. Gabapentin194 claims
  6. Levothyroxine Sodium177 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $649.03

25 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Son Nguyen$649.03
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Vvipa Medical Group IncVictorville, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Son Ngoc Nguyen among 17,133 family medicine physician records in California

Son Ngoc Nguyen, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1983 · median 2005 among the 10,652 with a school on file
  • Record last updated2015 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

76 family medicine physician records list a practice address in San Bernardino

They are 76 of the 5,645 NPPES records with a practice address in San Bernardino, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in San Bernardino → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Nesib Ali, MDSan Bernardino, CA 924041497725261
  2. Rolando Cadiz, M.D.San Bernardino, CA 924041427084185
  3. Ann-Renee Desrochers, MDSan Bernardino, CA 924041932135076
  4. Luisito Francisco, MDSan Bernardino, CA 924041205806775
  5. Mariclem Lao, MDSan Bernardino, CA 924041487624169
  6. Faith Lee-Jackson, MDSan Bernandino, CA 924041699745471
  7. Bolanle Oyeyipo-Ajumobi, MDSan Bernardino, CA 924041821084054
  8. Lien Pham, M.DSan Bernardino, CA 924041447293048

Common questions

What is Son Ngoc Nguyen, M.D.'s NPI number?

Son Ngoc Nguyen, M.D.'s National Provider Identifier (NPI) is 1376593889, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Son Ngoc Nguyen, M.D. located?

The NPPES record lists a practice address at 2150 N Waterman Ave, San Bernardino, CA, 92404. Phone: (909) 383-9385. Providers update this record themselves, so call before visiting.

How can I verify Son Ngoc Nguyen, M.D.'s license?

NPPES lists California license number A49188, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Son Ngoc Nguyen, M.D. prescribe under Medicare Part D?

In 2024, Son Ngoc Nguyen, M.D. had 5,400 Medicare Part D claims for 673 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.