Leon Tsai, M.D.
Gastroenterology Physician · Tucson, AZ
Leon Tsai, M.D. is a gastroenterology physician with a practice address in Tucson, Arizona, and NPI 1912983883, issued on Dec 21, 2005. Check the license (Arizona 29869, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Leon Tsai
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 29869 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 7566 N LA Cholla Blvd, Tucson, AZ 85741
- Phone
- (520) 742-4139
- Enumerated
- Dec 21, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (520) 742-9618
- Medicaid ID
- 633801 AZ
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 403 in Arizona → Look up another NPI →
Also registered at 7566 N LA Cholla Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Blinkoff, M.D.Gastroenterology Physician1699751545
- Bryan Contreras, M.D.Gastroenterology Physician1578549457
- James Dinning, M.D.Gastroenterology Physician1821074782
- Anne Elliott, PAPhysician Assistant1003864141
- Frederick Klein, M.D.Gastroenterology Physician1962487876
- Gary Monash, M.D.Gastroenterology Physician1891771846
Verify Leon Tsai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 29869Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% more Medicare Part D claims than the average gastroenterology physician in 2024
1,434 Medicare Part D claims for 729 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.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf333 claims
- Pantoprazole Sodium150 claims
- Famotidine143 claims
- Gavilyte-G80 claims
- Dicyclomine Hcl69 claims
- Omeprazole68 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 MIPS final score for 2023 (Medicare payment program): 25.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,175.01
55 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Leon Tsai among 403 gastroenterology physician records in Arizona
Leon Tsai, M.D. is one of 403 gastroenterology physician records with a practice address in Arizona. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 83% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2026 · 47% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Arizona
There are 403 gastroenterology physician records in Arizona.
All 403 in Arizona → Every provider in Tucson → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Larissa Allen, M.D.Tucson, AZ 857411659536480
- Scott Blinkoff, M.D.Tucson, AZ 857411699751545
- Bryan Contreras, M.D.Tucson, AZ 857411578549457
- James Dinning, M.D.Tucson, AZ 857411821074782
- Romeo Esquivel, MDTucson, AZ 857411790758662
- Frederick Klein, M.D.Tucson, AZ 857411962487876
- Gary Monash, M.D.Tucson, AZ 857411891771846
- Kristen Barrett, MDTucson, AZ 857451538455704
Common questions
What is Leon Tsai, M.D.'s NPI number?
Leon Tsai, M.D.'s National Provider Identifier (NPI) is 1912983883, issued on Dec 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Leon Tsai, M.D. located?
The NPPES record lists a practice address at 7566 N LA Cholla Blvd, Tucson, AZ, 85741. Phone: (520) 742-4139. Providers update this record themselves, so call before visiting.
How can I verify Leon Tsai, M.D.'s license?
NPPES lists Arizona license number 29869, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leon Tsai, M.D. prescribe under Medicare Part D?
In 2024, Leon Tsai, M.D. had 1,434 Medicare Part D claims for 729 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Leon Tsai, M.D.'s MIPS final score?
The 2023 MIPS final score is 25.6 of 100. 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.