NPPES file of Aug 9, 2026

Irene Nguyen

General Practice Dentistry · Fullerton, CA

Irene Nguyen is a general practice dentistry with a practice address in Fullerton, California, and NPI 1649881376, issued on Aug 14, 2020. Check the license (California 105293, as entered in NPPES) with the California board that licenses this profession; 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
1649881376
Name
Irene Nguyen
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
105293 CA
Self-reported in NPPES; status is on the state search
Practice location
301 N Euclid St, Fullerton, CA 92832
Phone
(714) 871-8475
Enumerated
Aug 14, 2020
Record last updated
Jan 15, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 301 N Euclid St

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

  1. Kim-Chi Trieu, DDSGeneral Practice Dentistry1679647341

Verify Irene Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 105293
    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
Find the California license search

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70% fewer Medicare Part D claims than the average general practice dentistry in 2024

25 Medicare Part D claims for 11 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Irene Nguyen25
  2. Specialty average83

Most prescribed

  1. Amoxicillin14 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.

75 general practice dentistry records list a practice address in Fullerton

They are 75 of the 5,437 NPPES records with a practice address in Fullerton, and 17,852 general practice dentistry records in California.

Other general practice dentistry records in California

  1. Ronald Aanerud, DDSSan Diego, CA1871752931
  2. Steven Aaronson, D.D.S.Santa Monica, CA1265455851
  3. Shahrzad Aarup, DDSPomona, CA1265784367
  4. Al Abad, DDSSan Jose, CA1104992148
  5. Erwin Abad, D.D.S.Canoga Park, CA1861590093
  6. Francine Abad, DDSSan Francisco, CA1942700810
  7. Maria Abad, D.D.S.Norwalk, CA1215006754
  8. Mark Ryan Abad, DDSDaly City, CA1770357394
  9. Sanaz Abadi, D.D.S.Los Angeles, CA1699934026
  10. Ernesto Abadilla, DDSPalm Desert, CA1508063801

Common questions

What is Irene Nguyen's NPI number?

Irene Nguyen's National Provider Identifier (NPI) is 1649881376, issued on Aug 14, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Irene Nguyen located?

The NPPES record lists a practice address at 301 N Euclid St, Fullerton, CA, 92832. Phone: (714) 871-8475. Providers update this record themselves, so call before visiting.

How can I verify Irene Nguyen's license?

NPPES lists California license number 105293, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Irene Nguyen prescribe under Medicare Part D?

In 2024, Irene Nguyen had 25 Medicare Part D claims for 11 beneficiaries; the average among general practice dentistry prescribers was 83. 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.