NPPES file of Aug 9, 2026

David Huu Nguyen, D.O.

Internal Medicine Physician · Rosemead, CA

David Huu Nguyen, D.O. is an internal medicine physician with a practice address in Rosemead, California, and NPI 1316017353, issued on Nov 8, 2006. Check the license (California 20A6867, 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
1316017353
Name
David Huu Nguyen
Credential
D.O.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
20A6867 CA
Self-reported in NPPES; status is on the state search
Practice location
9246 Valley Blvd, Rosemead, CA 91770
Phone
(626) 641-2119
Enumerated
Nov 8, 2006
Record last updated
Apr 18, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(626) 571-7732
Medicare enrollment
Enrolled (PECOS I20050606000459); accepts Medicare assignment
Medical or professional school
Des Moines University Of Osteopathic Medicine And Health Sciences, 1994
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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Also registered at 9246 Valley Blvd

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

  1. Nguyen Chiem, R PHPharmacist1952398992
  2. Trang Nguyen, DDSGeneral Practice Dentistry1245300318

Verify David Huu 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 20A6867
    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

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2.1 times the Medicare Part D claims of the average internal medicine physician in 2024

6,737 Medicare Part D claims for 246 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 120 claims were for opioids.

  1. David Nguyen6,737
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium598 claims
  2. Amlodipine Besylate396 claims
  3. Omeprazole306 claims
  4. Alendronate Sodium287 claims
  5. Amoxicillin221 claims
  6. Celecoxib221 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: $41.45

2 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. David Nguyen$41.45
  2. Specialty average$1,303.06

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

14 internal medicine physician records list a practice address in Rosemead

They are 14 of the 839 NPPES records with a practice address in Rosemead, and 17,696 internal medicine physician records in California.

Other internal medicine physician records in California

  1. Jacob Aaron, MDSan Francisco, CA1407202518
  2. Alistair Aaronson, MDStanford, CA1457628760
  3. Jose Abad., MDSacramento, CA1144607219
  4. Donna Abare, MDOakland, CA1386722155
  5. Marce AbareScotts Valley, CA1457744708
  6. Samuel Abarte, M.D.Chula Vista, CA1578535498
  7. Alexander Abary, MDLong Beach, CA1104995919
  8. Luba Abascal, MDSan Francisco, CA1023180874
  9. Michael Abate, MDSacramento, CA1548248131
  10. Wali Abawi, D.O.Joshua Tree, CA1104362268

Common questions

What is David Huu Nguyen, D.O.'s NPI number?

David Huu Nguyen, D.O.'s National Provider Identifier (NPI) is 1316017353, issued on Nov 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is David Huu Nguyen, D.O. located?

The NPPES record lists a practice address at 9246 Valley Blvd, Rosemead, CA, 91770. Phone: (626) 641-2119. Providers update this record themselves, so call before visiting.

How can I verify David Huu Nguyen, D.O.'s license?

NPPES lists California license number 20A6867, 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 David Huu Nguyen, D.O. prescribe under Medicare Part D?

In 2024, David Huu Nguyen, D.O. had 6,737 Medicare Part D claims for 246 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.

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.