NPPES file of Aug 9, 2026

Matthew Alan Chin, M.D.

Gastroenterology Physician · Walnut Creek, CA

Matthew Alan Chin, M.D. is a gastroenterology physician with a practice address in Walnut Creek, California, and NPI 1629397351, issued on May 20, 2010. Check the license (California A118529, 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
1629397351
Name
Matthew Alan Chin
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
A118529 CA
Self-reported in NPPES; status is on the state search
Practice location
1450 Treat Blvd Ste 200, Walnut Creek, CA 94597
Phone
(925) 296-7340
Enumerated
May 20, 2010
Record last updated
Feb 26, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20160701001590); accepts Medicare assignment
Medical or professional school
University Of California, San Diego School Of Medicine, 2010
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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Verify Matthew Alan Chin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A118529
    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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17% fewer Medicare Part D claims than the average gastroenterology physician in 2024

671 Medicare Part D claims for 292 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. Matthew Chin671
  2. Specialty average811

Most prescribed

  1. Omeprazole138 claims
  2. Sod Sulf-Potass Sulf-Mag Sulf138 claims
  3. Pantoprazole Sodium94 claims
  4. Creon39 claims
  5. Famotidine37 claims
  6. Nortriptyline Hcl26 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): 85.7 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 score82.7
  2. Costout of 100 · 30%70.6
  3. Promoting interoperabilityout of 100 · 25%99.0
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $440.39

16 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. Matthew Chin$440.39
  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. John Muir Physician NetworkWalnut Creek, CA

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

Matthew Alan Chin among 2,140 gastroenterology physician records in California

Matthew Alan Chin, M.D. is one of 2,140 gastroenterology 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 2010, is newer than 72% of them.

  • NPI issued2010 · 72% of these records are older, 26% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2010 · median 2002 among the 1,538 with a school on file
  • Record last updated2018 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in California

There are 2,140 gastroenterology physician records in California.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Kanwar Gill, M.D.Walnut Creek, CA 945971861409385
  2. Hongha Vu James, M.D.Walnut Creek, CA 945971174798805
  3. Mervyn Becker, MDWalnut Creek, CA 945981841329430
  4. Eugene Chan, MDWalnut Creek, CA 945961528146610
  5. Suyi Chang, MDWalnut Creek, CA 945961972681468
  6. Steve Cheng, MDWalnut Creek, CA 945981245318328
  7. Daniel Chung, MDWalnut Creek, CA 945961063590552
  8. Ming Fang, MDWalnut Creek, CA 945961366520199

Common questions

What is Matthew Alan Chin, M.D.'s NPI number?

Matthew Alan Chin, M.D.'s National Provider Identifier (NPI) is 1629397351, issued on May 20, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Alan Chin, M.D. located?

The NPPES record lists a practice address at 1450 Treat Blvd Ste 200, Walnut Creek, CA, 94597. Phone: (925) 296-7340. Providers update this record themselves, so call before visiting.

How can I verify Matthew Alan Chin, M.D.'s license?

NPPES lists California license number A118529, 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 Matthew Alan Chin, M.D. prescribe under Medicare Part D?

In 2024, Matthew Alan Chin, M.D. had 671 Medicare Part D claims for 292 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

What is Matthew Alan Chin, M.D.'s MIPS final score?

The 2023 MIPS final score is 85.7 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.