NPPES file of Aug 9, 2026

Wesley M. Tay, M.D.

Student in an Organized Health Care Education/Training Program · Martinez, CA

Wesley M. Tay, M.D. is a student in an organized health care education/training program with a practice address in Martinez, California, and NPI 1134534738, issued on Jun 23, 2014. Check the license with the California board that licenses this profession; 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
1134534738
Name
Wesley M. Tay
Credential
M.D.
Primary taxonomy
Student in an Organized Health Care Education/Training Program 390200000X
Practice location
2500 Alhambra Ave, Martinez, CA 94553
Phone
(925) 370-5000
Enumerated
Jun 23, 2014
Record last updated
Dec 17, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20171207002277); accepts Medicare assignment
Medical or professional school
University Of California, San Francisco School Of Medicine, 2014
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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Also registered at 2500 Alhambra Ave

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

  1. Pyra Aarden, MDEmergency Medicine Physician1417058199
  2. Zohaib AbbasiPsychiatry Physician1013392224
  3. Lolita AdonaFamily Nurse Practitioner1821110925
  4. Namita AgarwalPediatrics Physician1467626341
  5. Edward AgyekumDentist1124196696
  6. Abid Ahmed, M.D.Internal Medicine Physician1346531001

Verify Wesley M. Tay in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
Find the California 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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25.2 times the Medicare Part D claims of the average student in an organized health care education/training program in 2024

4,657 Medicare Part D claims for 759 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D. 69 claims were for opioids.

  1. Wesley Tay4,657
  2. Specialty average185

Most prescribed

  1. Atorvastatin Calcium455 claims
  2. Levothyroxine Sodium214 claims
  3. Lisinopril214 claims
  4. Losartan Potassium198 claims
  5. Amlodipine Besylate166 claims
  6. Albuterol Sulfate Hfa107 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncVallejo, CA

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

Wesley M. Tay among 40,652 student in an organized health care education/training program records in California

Wesley M. Tay, M.D. is one of 40,652 student in an organized health care education/training program records with a practice address in California. 16% 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 9% of them.

  • NPI issued2014 · 9% of these records are older, 89% newer
  • In a Medicare fileYes · 16% of these records are
  • In the CMS Doctors and Clinicians fileYes · 6% of these records are
  • Graduated2014 · median 2017 among the 2,409 with a school on file
  • Record last updated2021 · 26% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

77 student in an organized health care education/training program records list a practice address in Martinez

They are 77 of the 1,816 NPPES records with a practice address in Martinez, and 40,652 student in an organized health care education/training program records in California.

The 8 student in an organized health care education/training program records with the nearest ZIP codes

  1. Elsie AriasMartinez, CA 945531427569805
  2. Kaya BelknapMartinez, CA 945531235544834
  3. Nathalie BoittinMartinez, CA 945531518384635
  4. Erica Dorfman, M.D.Martinez, CA 945531962817569
  5. Erik Gonzalez, M.D.Martinez, CA 945531447632898
  6. William Guerin, MDMartinez, CA 945531245760578
  7. Melissa HarlowMartinez, CA 945531902333891
  8. Thomas Jewell, M.A.Martinez, CA 945531568517647

Common questions

What is Wesley M. Tay, M.D.'s NPI number?

Wesley M. Tay, M.D.'s National Provider Identifier (NPI) is 1134534738, issued on Jun 23, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Wesley M. Tay, M.D. located?

The NPPES record lists a practice address at 2500 Alhambra Ave, Martinez, CA, 94553. Phone: (925) 370-5000. Providers update this record themselves, so call before visiting.

How can I verify Wesley M. Tay, M.D.'s license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Wesley M. Tay, M.D. prescribe under Medicare Part D?

In 2024, Wesley M. Tay, M.D. had 4,657 Medicare Part D claims for 759 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.