Wynnson W. Tom, M.D.
Anesthesiology Physician · Orange, CA
Wynnson W. Tom, M.D. is an anesthesiology physician with a practice address in Orange, California, and NPI 1902128028, issued on Feb 16, 2010. Check the license (California A101740, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Wynnson W. Tom
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A101740 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2601 E Chapman Ave, Orange, CA 92869
- Phone
- (714) 633-0011
- Enumerated
- Feb 16, 2010
- Record last updated
- Jul 21, 2022
- Fax
- (714) 633-2238
- Medicare enrollment
- Enrolled (PECOS I20101025000797); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 2601 E Chapman Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- James Chang, M.D.Anesthesiology Physician1700867298
- Jeffry Chen, M.D.Anesthesiology Physician1578791620
- Vadim Chudnovsky, M.D.Diagnostic Radiology Physician1922049394
- Brian Coombe, DOEmergency Medicine Physician1023257755
- Usha Desai, RNFARegistered Nurse First Assistant1144357914
Verify Wynnson W. Tom in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A101740Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $34.19
1 payment: food and beverage; the largest payer was Merck Sharp & Dohme LLC. 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.
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
- Orange Coast Anesthesia IncOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Wynnson W. Tom among 7,571 anesthesiology physician records in California
Wynnson W. Tom, 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 2010, is newer than 65% of them.
- NPI issued2010 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2006 · median 2006 among the 4,868 with a school on file
- Record last updated2022 · 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).
267 anesthesiology physician records list a practice address in Orange
They are 267 of the 13,245 NPPES records with a practice address in Orange, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Orange → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Gregory Barnes, M.D.Orange, CA 928691275626871
- James Chang, M.D.Orange, CA 928691700867298
- Jeffry Chen, M.D.Orange, CA 928691578791620
- Christos Kalatzis, MDOrange, CA 928691154319754
- Kelvin Nguyen, M.D.Orange, CA 928691699861146
- James Nguyen, M.D.Orange, CA 928691679880934
- Ronald C Cellona, MDPlacentia, CA 928701710067806
- Alexander CentalaOrange, CA 928681679215644
Common questions
What is Wynnson W. Tom, M.D.'s NPI number?
Wynnson W. Tom, M.D.'s National Provider Identifier (NPI) is 1902128028, issued on Feb 16, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Wynnson W. Tom, M.D. located?
The NPPES record lists a practice address at 2601 E Chapman Ave, Orange, CA, 92869. Phone: (714) 633-0011. Providers update this record themselves, so call before visiting.
How can I verify Wynnson W. Tom, M.D.'s license?
NPPES lists California license number A101740, 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.