NPPES file of Aug 9, 2026

An Duy Nguyen, M.D.

Hematology & Oncology Physician · Huntington Beach, CA

An Duy Nguyen, M.D. is a hematology & oncology physician with a practice address in Huntington Beach, California, and NPI 1023011384, issued on May 31, 2005. Check the license (California A78574, 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
1023011384
Name
An Duy Nguyen
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
A78574 CA
Self-reported in NPPES; status is on the state search
Practice location
19582 Beach Blvd, Huntington Beach, CA 92648
Phone
(714) 252-9415
Enumerated
May 31, 2005
Record last updated
Jan 9, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(714) 963-8407
Medicaid ID
00A785740 CA
Medicare enrollment
Enrolled (PECOS I20040621001522); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 2001
Telehealth
Offers telehealth (CMS)
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 19582 Beach Blvd

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

  1. Scott Ahl, D.O.Endocrinology, Diabetes & Metabolism Physician1558674523
  2. Rita Archer, MDFamily Medicine Physician1598890121
  3. Reilly CaseClinical Social Worker1285818716
  4. Matthew Chandler, PA-CMedical Physician Assistant1215261771
  5. Ratul Chatterjee, M.D.Internal Medicine Physician1770597387
  6. Pundari Chemitiganti, M.D.Gastroenterology Physician1033123971

Verify An Duy 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 A78574
    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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33% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

588 Medicare Part D claims for 95 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 12 claims were for opioids.

  1. An Nguyen588
  2. Specialty average877

Most prescribed

  1. Letrozole44 claims
  2. Gabapentin27 claims
  3. Hydralazine Hcl22 claims
  4. Citalopram Hbr21 claims
  5. Diphenoxylate-Atropine21 claims
  6. Hydroxyurea19 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: $51.76

2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. An Nguyen$51.76
  2. Specialty average$7,481.41

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. Usc Care Medical Group IncLos Angeles, CA

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

An Duy Nguyen among 1,583 hematology & oncology physician records in California

An Duy Nguyen, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 92% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2001 · median 2003 among the 1,124 with a school on file
  • Record last updated2012 · 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 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Mohamad BarakatHuntington Beach, CA 926481558534131
  2. David Burtzo, M.D.Huntington Beach, CA 926481336168814
  3. Luke Chen, M.D.Huntington Beach, CA 926481265451736
  4. Umair Ghani, M.D.Huntington Beach, CA 926481619266228
  5. Yaser Homsi, M.D.Huntington Beach, CA 926481790943983
  6. Danny Nguyen, M.D.Huntington Beach, CA 926481386960334
  7. Karlos Oregel, M.D.Huntington Beach, CA 926481184913006
  8. Eleonor Quan, M.D.Huntington Beach, CA 926481770502254

Common questions

What is An Duy Nguyen, M.D.'s NPI number?

An Duy Nguyen, M.D.'s National Provider Identifier (NPI) is 1023011384, issued on May 31, 2005. An NPI identifies a provider in billing; it is not a license.

Where is An Duy Nguyen, M.D. located?

The NPPES record lists a practice address at 19582 Beach Blvd, Huntington Beach, CA, 92648. Phone: (714) 252-9415. Providers update this record themselves, so call before visiting.

How can I verify An Duy Nguyen, M.D.'s license?

NPPES lists California license number A78574, 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 An Duy Nguyen, M.D. prescribe under Medicare Part D?

In 2024, An Duy Nguyen, M.D. had 588 Medicare Part D claims for 95 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.