Matthew Tsai, M.D., PH.D
Gastroenterology Physician · San Diego, CA
Matthew Tsai, M.D., PH.D is a gastroenterology physician with a practice address in San Diego, California, and NPI 1285051177, issued on Mar 28, 2014. Check the license (California A138084, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Matthew Tsai
- Credential
- M.D., PH.D
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A138084 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 W Arbor Dr, San Diego, CA 92103
- Phone
- (800) 926-8273
- Enumerated
- Mar 28, 2014
- Record last updated
- Dec 17, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200114003694); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 200 W Arbor Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kristy AbelCertified Registered Nurse Anesthetist1962113035
- Paula Abeleda, NPFamily Nurse Practitioner1558945022
Verify Matthew Tsai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A138084Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average gastroenterology physician in 2024
393 Medicare Part D claims for 244 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf88 claims
- Gavilyte-G52 claims
- Omeprazole36 claims
- Peg-3350 And Electrolytes27 claims
- Linzess21 claims
- Lubiprostone19 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.
Industry payments in 2024: $322.82
3 payments; by number, the most common kind was food and beverage; the largest payer was Celgene Corporation. 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
- Regents OF The University OF CaliforniaSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Tsai among 2,140 gastroenterology physician records in California
Matthew Tsai, M.D., PH.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 2014, is newer than 83% of them.
- NPI issued2014 · 83% of these records are older, 15% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2014 · median 2002 among the 1,538 with a school on file
- Record last updated2019 · 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.
All 2,140 in California → Every provider in San Diego → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Nedret Copur, MDSan Diego, CA 921031932290145
- Michael Docherty, M.D.San Diego, CA 921031841230935
- Suja Dubois, MDSan Diego, CA 921031013976612
- Michael Goldhamer, M.D.San Diego, CA 921031104880202
- Kevin Haynes, MDSan Diego, CA 921031467411447
- Gordon Hunt, M.D.San Diego, CA 921031063437101
- Barbara Jung, M.D.San Diego, CA 921031205869062
- Ravinder Mittal, M.D.San Diego, CA 921031376567255
Common questions
What is Matthew Tsai, M.D., PH.D's NPI number?
Matthew Tsai, M.D., PH.D's National Provider Identifier (NPI) is 1285051177, issued on Mar 28, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Tsai, M.D., PH.D located?
The NPPES record lists a practice address at 200 W Arbor Dr, San Diego, CA, 92103. Phone: (800) 926-8273. Providers update this record themselves, so call before visiting.
How can I verify Matthew Tsai, M.D., PH.D's license?
NPPES lists California license number A138084, 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 Tsai, M.D., PH.D prescribe under Medicare Part D?
In 2024, Matthew Tsai, M.D., PH.D had 393 Medicare Part D claims for 244 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.
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.