NPPES file of Aug 9, 2026

Tom S. Yao, M.D.

Anesthesiology Physician · Hemet, CA

Tom S. Yao, M.D. is an anesthesiology physician with a practice address in Hemet, California, and NPI 1659482909, issued on Aug 31, 2006. Check the license (California A89060, as entered in NPPES) on the Medical Board of California; 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
1659482909
Name
Tom S. Yao
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
A89060 CA
Self-reported in NPPES; status is on the state search
Practice location
1117 E Devonshire Ave, Hemet, CA 92543
Phone
(951) 652-2811
Enumerated
Aug 31, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
00A890600 CA
Medicare enrollment
Enrolled (PECOS I20050420001408); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 2000
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 1117 E Devonshire Ave

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

  1. Niloufar AbbasiStudent in an Organized Health Care Education/Training Program1861334658
  2. Dawit AbrahamStudent in an Organized Health Care Education/Training Program1306599097
  3. Shawn Alam, MDStudent in an Organized Health Care Education/Training Program1730021247
  4. Amer AldaasStudent in an Organized Health Care Education/Training Program1124814025
  5. Muhammad Zain Ali, MDStudent in an Organized Health Care Education/Training Program1467205849
  6. Adam AlluisStudent in an Organized Health Care Education/Training Program1235071515

Verify Tom S. Yao in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A89060
    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 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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Industry payments in 2024: $64.30

2 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Tom Yao$64.30
  2. Specialty average$669.59

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

  1. Corona Anesthesia Group IncCorona, CA

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

Tom S. Yao among 7,571 anesthesiology physician records in California

Tom S. Yao, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% 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 5% of them.

  • NPI issued2006 · 5% of these records are older, 53% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2000 · median 2006 among the 4,868 with a school on file
  • Record last updated2007 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in California

There are 7,571 anesthesiology physician records in California.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Gary Baker, M.D.Hemet, CA 925431023029766
  2. Igor Bron, MDHemet, CA 925431912993155
  3. Kenneth Chang, M.D.Hemet, CA 925431730306739
  4. Le Chen, M.D.Hemet, CA 925431891861316
  5. Chia Lee, MDHemet, CA 925431730255258
  6. Zdenka Mateev, M.D., INC.Hemet, CA 925431336285881
  7. Catherine Sims, M.DHemet, CA 925431013069038
  8. Gina Amaya, D.O.Moreno Valley, CA 925551881871200

Common questions

What is Tom S. Yao, M.D.'s NPI number?

Tom S. Yao, M.D.'s National Provider Identifier (NPI) is 1659482909, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Tom S. Yao, M.D. located?

The NPPES record lists a practice address at 1117 E Devonshire Ave, Hemet, CA, 92543. Phone: (951) 652-2811. Providers update this record themselves, so call before visiting.

How can I verify Tom S. Yao, M.D.'s license?

NPPES lists California license number A89060, 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.

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.