William Richard Silveira, MD
Radiation Oncology Physician · Clovis, CA
William Richard Silveira, MD is a radiation oncology physician with a practice address in Clovis, California, and NPI 1447494398, issued on Apr 22, 2009. Check the license (California A115447, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Richard Silveira
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A115447 CA
Self-reported in NPPES; status is on the state search - Practice location
- 785 N. Medical Center Drive West, Clovis, CA 93611
- Phone
- (559) 387-1600
- Enumerated
- Apr 22, 2009
- Record last updated
- Mar 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (559) 387-1677
- Medicare enrollment
- Enrolled (PECOS I20140717002538); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Verify William Richard Silveira in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A115447Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average radiation oncology physician in 2024
86 Medicare Part D claims for 42 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Dexamethasone20 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 84 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $18.24
1 payment: food and beverage; the largest payer was Novocure 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.
Bills Medicare through one group practice
- Community Health PartnersClovis, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Richard Silveira among 735 radiation oncology physician records in California
William Richard Silveira, MD 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 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 34% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2009 · median 2005 among the 545 with a school on file
- Record last updated2021 · 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 Clovis → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Yuchi Peng, MDPalmdale, CA 935511023058195
- Artour Torossian, M.D.Palmdale, CA 935511851656953
- Boryana Eastman, M.D., PH.D.Lancaster, CA 935341316301948
- Ji Kim, M.D.Lancaster, CA 935341558523217
- Trevor Lim, M.D.Lancaster, CA 935341669546164
- Sukhjeet Batth, M.D.Fresno, CA 937201821320011
- Christine Chang-Halpenny, M.D.Fresno, CA 937201760776744
- Giatri Dave, MDFresno, CA 937201316901663
Common questions
What is William Richard Silveira, MD's NPI number?
William Richard Silveira, MD's National Provider Identifier (NPI) is 1447494398, issued on Apr 22, 2009. An NPI identifies a provider in billing; it is not a license.
Where is William Richard Silveira, MD located?
The NPPES record lists a practice address at 785 N. Medical Center Drive West, Clovis, CA, 93611. Phone: (559) 387-1600. Providers update this record themselves, so call before visiting.
How can I verify William Richard Silveira, MD's license?
NPPES lists California license number A115447, 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 William Richard Silveira, MD prescribe under Medicare Part D?
In 2024, William Richard Silveira, MD had 86 Medicare Part D claims for 42 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is William Richard Silveira, MD's MIPS final score?
The 2023 MIPS final score is 84 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.