Lin Chang, MD
Gastroenterology Physician · Los Angeles, CA
Lin Chang, MD is a gastroenterology physician with a practice address in Los Angeles, California, and NPI 1770518557, issued on Jul 11, 2006. Check the license (California G61634, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lin Chang
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G61634 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Medical Plz, Los Angeles, CA 90095
- Phone
- (310) 825-1597
- Enumerated
- Jul 11, 2006
- Record last updated
- Apr 25, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 00G616340 CA
- Medicare enrollment
- Enrolled (PECOS I20120228000062); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1986
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 100 Medical Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jennifer Giannini, NPAdult Health Nurse Practitioner1699009183
- John Glaspy, MDHematology & Oncology Physician1639104250
- Wendy Ho, MDGastroenterology Physician1750362570
Verify Lin Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G61634Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average gastroenterology physician in 2024
450 Medicare Part D claims for 56 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Linzess67 claims
- Motegrity54 claims
- Nortriptyline Hcl31 claims
- Lubiprostone21 claims
- Ondansetron Odt20 claims
- Pregabalin16 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): 86.1 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $7,197.47
7 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. 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.
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
- The Regents OF The University OF CaliforniaLos Angeles, 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
- David Aarons, MDLodi, CA1619081379
- Constante Abaya, MDOxnard, CA1003918459
- Sadeea Abbasi, M.D., PH.D.Los Angeles, CA1366713513
- Basim Abdelkarim, MDUpland, CA1932217544
- Homan Abdollahzadeh, MDPalm Springs, CA1184634826
- John Abdulian, M.D.Fresno, CA1437114113
- Hussein Abidali, DORancho Cucamonga, CA1205274768
- Alaa Abousaif, MDOrange, CA1235124108
- Donald Abrahm, M.D.Newport Beach, CA1215022405
- Maria Abreu, M.D.West Hollywood, CA1598793374
Common questions
What is Lin Chang, MD's NPI number?
Lin Chang, MD's National Provider Identifier (NPI) is 1770518557, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lin Chang, MD located?
The NPPES record lists a practice address at 100 Medical Plz, Los Angeles, CA, 90095. Phone: (310) 825-1597. Providers update this record themselves, so call before visiting.
How can I verify Lin Chang, MD's license?
NPPES lists California license number G61634, 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 Lin Chang, MD prescribe under Medicare Part D?
In 2024, Lin Chang, MD had 450 Medicare Part D claims for 56 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Lin Chang, MD's MIPS final score?
The 2023 MIPS final score is 86.1 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.