NPPES file of Aug 9, 2026

Thomas Y. Tsai, M.D.

Family Medicine Physician · Gilbert, AZ

Thomas Y. Tsai, M.D. is a family medicine physician with a practice address in Gilbert, Arizona, and NPI 1912010992, issued on Aug 16, 2006. Check the license (Arizona 35344, as entered in NPPES) on the Arizona Medical Board; 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
1912010992
Name
Thomas Y. Tsai
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
35344 AZ
Self-reported in NPPES; status is on the state search
Practice location
2196 E Williams Field RD, Gilbert, AZ 85295
Phone
(480) 237-1395
Enumerated
Aug 16, 2006
Record last updated
Mar 14, 2025
Fax
(415) 252-7176
Medicare enrollment
Enrolled (PECOS I20061025000092); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 2000
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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8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →

Also registered at 2196 E Williams Field RD

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

  1. Christian Long, PA-CMedical Physician Assistant1336169077
  2. Zachary Ortiz, M.D.Family Medicine Physician1942561451
  3. Rakeshkumar Patel, MDFamily Medicine Physician1568436673
  4. Amanda Shelley, PA-CPhysician Assistant1003993916

Verify Thomas Y. Tsai in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 35344    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 Arizona license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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27% fewer Medicare Part D claims than the average family medicine physician in 2024

2,583 Medicare Part D claims for 215 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 82 claims were for opioids.

  1. Thomas Tsai2,583
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium134 claims
  2. Levothyroxine Sodium134 claims
  3. Lisinopril100 claims
  4. Rosuvastatin Calcium74 claims
  5. Ozempic63 claims
  6. Amlodipine Besylate57 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: $317.96

4 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Thomas Tsai$317.96
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Iora Senior Health LLCGilbert, AZ
  2. Omg Arizona LLCGilbert, AZ

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

Thomas Y. Tsai among 3,119 family medicine physician records in Arizona

Thomas Y. Tsai, M.D. is one of 3,119 family medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.

  • NPI issued2006 · 12% of these records are older, 54% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2000 · median 2006 among the 1,775 with a school on file
  • Record last updated2025 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

107 family medicine physician records list a practice address in Gilbert

They are 107 of the 5,802 NPPES records with a practice address in Gilbert, and 3,119 family medicine physician records in Arizona.

All 3,119 in Arizona → Every provider in Gilbert → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Tim Bryan, MDGilbert, AZ 852951831133743
  2. Thomas Davis, MDGilbert, AZ 852951881621456
  3. Michael Dunn, MDGilbert, AZ 852951114965605
  4. Keith Ginsberg, D.O.Gilbert, AZ 852951285615906
  5. Diem-Thuy Kahlon, D.O.Gilbert, AZ 852951851365688
  6. Allison Kaplan, MDGilbert, AZ 852951962463844
  7. Linda Lau, MDGilbert, AZ 852951710940705
  8. Ronald Lee, MDGilbert, AZ 852951952332587

Common questions

What is Thomas Y. Tsai, M.D.'s NPI number?

Thomas Y. Tsai, M.D.'s National Provider Identifier (NPI) is 1912010992, issued on Aug 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Y. Tsai, M.D. located?

The NPPES record lists a practice address at 2196 E Williams Field RD, Gilbert, AZ, 85295. Phone: (480) 237-1395. Providers update this record themselves, so call before visiting.

How can I verify Thomas Y. Tsai, M.D.'s license?

NPPES lists Arizona license number 35344, 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 Thomas Y. Tsai, M.D. prescribe under Medicare Part D?

In 2024, Thomas Y. Tsai, M.D. had 2,583 Medicare Part D claims for 215 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.