NPPES file of Aug 9, 2026

Tuan Duc Nguyen, M.D.

Anatomic Pathology & Clinical Pathology Physician · Rosemead, CA

Tuan Duc Nguyen, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Rosemead, California, and NPI 1861406886, issued on Jul 27, 2006. Check the license (California A84883, 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
1861406886
Name
Tuan Duc Nguyen
Credential
M.D.
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
A84883 CA
Self-reported in NPPES; status is on the state search
Practice location
3830 Bartlett Ave, Rosemead, CA 91770
Phone
(661) 472-5003
Enumerated
Jul 27, 2006
Record last updated
Jul 14, 2008 (not updated in 18 years: call before relying on the address or phone)
Medicaid ID
00A848830 CA
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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Verify Tuan Duc 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 A84883
    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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94% fewer Medicare Part D claims than the average anatomic pathology & clinical pathology physician in 2024

12 Medicare Part D claims, against an average of 192 among the 401 providers of this specialty who prescribed in Part D.

  1. Tuan Nguyen12
  2. Specialty average192

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.

Tuan Duc Nguyen among 1,554 anatomic pathology & clinical pathology physician records in California

Tuan Duc Nguyen, M.D. is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 57% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileNo · 57% of these records are
  • Record last updated2008 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in California

There are 1,554 anatomic pathology & clinical pathology physician records in California.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Hao Nguyen, MDPomona, CA 917681407046659
  2. Catherine Chang-Suen, D.O.Pomona, CA 917671205201621
  3. Glenn Hausdorfer, MDSan Dimas, CA 917731588658249
  4. Roy Moffatt, M.D.San Dimas, CA 917731386638054
  5. David Nasca, M.D.Pomona, CA 917671508887969
  6. Robert Riechmann, M.D.San Dimas, CA 917731265426936
  7. Victor Santiago, MDPomona, CA 917671851711568
  8. Philip Strassle, MDPomona, CA 917671952320699

Common questions

What is Tuan Duc Nguyen, M.D.'s NPI number?

Tuan Duc Nguyen, M.D.'s National Provider Identifier (NPI) is 1861406886, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Tuan Duc Nguyen, M.D. located?

The NPPES record lists a practice address at 3830 Bartlett Ave, Rosemead, CA, 91770. Phone: (661) 472-5003. Providers update this record themselves, so call before visiting.

How can I verify Tuan Duc Nguyen, M.D.'s license?

NPPES lists California license number A84883, 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 Tuan Duc Nguyen, M.D. prescribe under Medicare Part D?

In 2024, Tuan Duc Nguyen, M.D. had 12 Medicare Part D claims; the average among anatomic pathology & clinical pathology physician prescribers was 192. 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.