NPPES file of Aug 9, 2026

Justin Chuang, M.D.

Gastroenterology Physician · San Jose, CA

Justin Chuang, M.D. is a gastroenterology physician with a practice address in San Jose, California, and NPI 1205368537, issued on Mar 27, 2017. Check the license (California A206788, 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
1205368537
Name
Justin Chuang
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
A206788 CA
Self-reported in NPPES; status is on the state search
Practice location
250 Hospital Pkwy, San Jose, CA 95119
Phone
(408) 972-3000
Enumerated
Mar 27, 2017
Record last updated
Aug 2, 2026
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 250 Hospital Pkwy

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

  1. Kristine AmiiPhysical Therapist1356696975
  2. Franklin Amog, RNCritical Care Medicine Registered Nurse1376408914
  3. Rachel AranzasoSocial Worker1740659366
  4. Robert Atienza, MDAnatomic Pathology & Clinical Pathology Physician1609134725
  5. Elizabeth BaileyDietary Manager1346388758
  6. Heather BlakeCertified Registered Nurse Anesthetist1750771168

Verify Justin Chuang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A206788    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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89% fewer Medicare Part D claims than the average gastroenterology physician in 2024

86 Medicare Part D claims for 50 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.

  1. Justin Chuang86
  2. Specialty average811

Most prescribed

  1. Sod Sulf-Potass Sulf-Mag Sulf23 claims
  2. Pantoprazole Sodium20 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.

Gastroenterology Physician providers in California

There are 2,140 gastroenterology physician records in California.

All 2,140 in California → Every provider in San Jose →

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 Justin Chuang, M.D.'s NPI number?

Justin Chuang, M.D.'s National Provider Identifier (NPI) is 1205368537, issued on Mar 27, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Justin Chuang, M.D. located?

The NPPES record lists a practice address at 250 Hospital Pkwy, San Jose, CA, 95119. Phone: (408) 972-3000. Providers update this record themselves, so call before visiting.

How can I verify Justin Chuang, M.D.'s license?

NPPES lists California license number A206788, 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 Justin Chuang, M.D. prescribe under Medicare Part D?

In 2024, Justin Chuang, M.D. had 86 Medicare Part D claims for 50 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.