Wilson Xuan Mai, MD, PHD
Radiation Oncology Physician · Santa Clara, CA
Wilson Xuan Mai, MD, PHD is a radiation oncology physician with a practice address in Santa Clara, California, and NPI 1285210633, issued on Mar 23, 2021. Check the license (California A179877, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Wilson Xuan Mai
- Credential
- MD, PHD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A179877 CA
Self-reported in NPPES; status is on the state search - Practice location
- 710 Lawrence Expy, Santa Clara, CA 95051
- Phone
- (408) 851-1000
- Enumerated
- Mar 23, 2021
- Record last updated
- Apr 15, 2026
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 710 Lawrence Expy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Farhana Ahmed, MDHospitalist Physician1215110002
Verify Wilson Xuan Mai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A179877Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average radiation oncology physician in 2024
13 Medicare Part D claims for 12 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
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: $156.00
1 payment: food and beverage; the largest payer was RefleXion Medical, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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.
Wilson Xuan Mai among 735 radiation oncology physician records in California
Wilson Xuan Mai, MD, PHD is one of 735 radiation oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 98% of them.
- NPI issued2021 · 98% of these records are older, 1% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 74% of these records are
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in Santa Clara → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Benjamin Fisch, MDSanta Clara, CA 950511922185859
- Joseph Hastings, MD, MPHSanta Clara, CA 950511194815134
- Anita Lee, MDSanta Clara, CA 950511790773448
- Brian Missett, MDSanta Clara, CA 950511679651251
- Subir Nag, MDSanta Clara, CA 950511962552778
- Jagdeep Raince, MDSanta Clara, CA 950511417236274
- Samantha Seaward, MDSanta Clara, CA 950511790862621
- Radhika Sreeraman Kumar, M.D.Santa Clara, CA 950511265711394
Common questions
What is Wilson Xuan Mai, MD, PHD's NPI number?
Wilson Xuan Mai, MD, PHD's National Provider Identifier (NPI) is 1285210633, issued on Mar 23, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Wilson Xuan Mai, MD, PHD located?
The NPPES record lists a practice address at 710 Lawrence Expy, Santa Clara, CA, 95051. Phone: (408) 851-1000. Providers update this record themselves, so call before visiting.
How can I verify Wilson Xuan Mai, MD, PHD's license?
NPPES lists California license number A179877, 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 Wilson Xuan Mai, MD, PHD prescribe under Medicare Part D?
In 2024, Wilson Xuan Mai, MD, PHD had 13 Medicare Part D claims for 12 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.