Wilbert Timothy Tsai, MD
Family Medicine Physician · Pomona, CA
Wilbert Timothy Tsai, MD is a family medicine physician with a practice address in Pomona, California, and NPI 1013114420, issued on Jun 29, 2007. Check the license (California A107727, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Wilbert Timothy Tsai
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A107727 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1900 Royalty Dr Ste 302, Pomona, CA 91767
- Phone
- (909) 623-6581
- Enumerated
- Jun 29, 2007
- Record last updated
- Oct 17, 2025
- Fax
- (909) 623-1751
- Medicare enrollment
- Enrolled (PECOS I20101209000174); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Wilbert Timothy Tsai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A107727Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average family medicine physician in 2024
7,427 Medicare Part D claims for 582 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 145 claims were for opioids.
Most prescribed
- Atorvastatin Calcium566 claims
- Losartan Potassium367 claims
- Levothyroxine Sodium306 claims
- Amlodipine Besylate292 claims
- Metoprolol Succinate184 claims
- Pantoprazole Sodium180 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: $1,786.94
72 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Wilbert Timothy Tsai among 17,133 family medicine physician records in California
Wilbert Timothy Tsai, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2007 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 58% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
78 family medicine physician records list a practice address in Pomona
They are 78 of the 5,102 NPPES records with a practice address in Pomona, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Pomona → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Snezana Begovic, MDPomona, CA 917671033135736
- Douglas Chiriboga, MDPomona, CA 917671225038342
- April Ford, MDPomona, CA 917671023045283
- Jaime Gonzalez, M.D.Pomona, CA 917671235180563
- Roger Hall, DOPomona, CA 917671336118579
- Sudathi Jeereddi, MDPomona, CA 917671609844984
- Randy Karu, M.D.Pomona, CA 917671386645760
- Keith Kusunis, MDPomona, CA 917671033110945
Common questions
What is Wilbert Timothy Tsai, MD's NPI number?
Wilbert Timothy Tsai, MD's National Provider Identifier (NPI) is 1013114420, issued on Jun 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Wilbert Timothy Tsai, MD located?
The NPPES record lists a practice address at 1900 Royalty Dr Ste 302, Pomona, CA, 91767. Phone: (909) 623-6581. Providers update this record themselves, so call before visiting.
How can I verify Wilbert Timothy Tsai, MD's license?
NPPES lists California license number A107727, 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 Wilbert Timothy Tsai, MD prescribe under Medicare Part D?
In 2024, Wilbert Timothy Tsai, MD had 7,427 Medicare Part D claims for 582 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.
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.