NPPES file of Aug 9, 2026

Thai-Van Xuan Nguyen, M.D.

Gastroenterology Physician · Los Alamitos, CA

Thai-Van Xuan Nguyen, M.D. is a gastroenterology physician with a practice address in Los Alamitos, California, and NPI 1427082890, issued on Jul 10, 2006. Check the license (California G72892, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427082890
Name
Thai-Van Xuan Nguyen
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
G72892 CA
Self-reported in NPPES; status is on the state search
Practice location
10861 Cherry Street, Los Alamitos, CA 90720
Phone
(562) 493-1011
Enumerated
Jul 10, 2006
Record last updated
Aug 25, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(562) 594-9226
Medicaid ID
GR0092040 CA
Medicare enrollment
Enrolled (PECOS I20050425001264); accepts Medicare assignment
Medical or professional school
Albert Einstein College Of Medicine Of Yeshiva University, 1990
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 10861 Cherry Street

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

  1. Joe Chen, M.D.Gastroenterology Physician1700817350
  2. Alfred Reyno, PA-CPhysician Assistant1093832578
  3. Daniel Rodiles, M.D.Gastroenterology Physician1497789960
  4. Michelle Ryan, MDInternal Medicine Physician1568511913
  5. Richard Wexler, MDInternal Medicine Physician1679625362

Verify Thai-Van Xuan 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 G72892
    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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10% fewer Medicare Part D claims than the average gastroenterology physician in 2024

727 Medicare Part D claims for 336 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.

  1. Thai-Van Nguyen727
  2. Specialty average811

Most prescribed

  1. Omeprazole175 claims
  2. Sod Sulf-Potass Sulf-Mag Sulf118 claims
  3. Pantoprazole Sodium63 claims
  4. Balsalazide Disodium41 claims
  5. Linzess29 claims
  6. Mesalamine25 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 42.5 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score44.7
  2. Costout of 100 · 30%74.8
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $2,231.85

78 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Thai-Van Nguyen$2,231.85
  2. Specialty average$5,015.95

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. Socal Gastroenterology Corp.Los Alamitos, CA

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

Gastroenterology Physician providers in California

There are 2,140 gastroenterology physician records in California.

Other gastroenterology physician records in California

  1. David Aarons, MDLodi, CA1619081379
  2. Constante Abaya, MDOxnard, CA1003918459
  3. Sadeea Abbasi, M.D., PH.D.Los Angeles, CA1366713513
  4. Basim Abdelkarim, MDUpland, CA1932217544
  5. Homan Abdollahzadeh, MDPalm Springs, CA1184634826
  6. John Abdulian, M.D.Fresno, CA1437114113
  7. Hussein Abidali, DORancho Cucamonga, CA1205274768
  8. Alaa Abousaif, MDOrange, CA1235124108
  9. Donald Abrahm, M.D.Newport Beach, CA1215022405
  10. Maria Abreu, M.D.West Hollywood, CA1598793374

Common questions

What is Thai-Van Xuan Nguyen, M.D.'s NPI number?

Thai-Van Xuan Nguyen, M.D.'s National Provider Identifier (NPI) is 1427082890, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Thai-Van Xuan Nguyen, M.D. located?

The NPPES record lists a practice address at 10861 Cherry Street, Los Alamitos, CA, 90720. Phone: (562) 493-1011. Providers update this record themselves, so call before visiting.

How can I verify Thai-Van Xuan Nguyen, M.D.'s license?

NPPES lists California license number G72892, 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 Thai-Van Xuan Nguyen, M.D. prescribe under Medicare Part D?

In 2024, Thai-Van Xuan Nguyen, M.D. had 727 Medicare Part D claims for 336 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

What is Thai-Van Xuan Nguyen, M.D.'s MIPS final score?

The 2023 MIPS final score is 42.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.