Ronald Lambert Van Roy, M.D.
Therapeutic Radiology Physician · Santa Rosa, CA
Ronald Lambert Van Roy, M.D. is a therapeutic radiology physician with a practice address in Santa Rosa, California, and NPI 1720168586, issued on Oct 16, 2006. Check the license (California C30218, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald Lambert Van Roy
- Credential
- M.D.
- Primary taxonomy
- Therapeutic Radiology Physician 2085R0203X
- License number
- C30218 CA
Self-reported in NPPES; status is on the state search - Practice location
- 121 Sotoyome St, Santa Rosa, CA 95405
- Phone
- (707) 525-1150
- Enumerated
- Oct 16, 2006
- Record last updated
- Sep 11, 2025
- Fax
- (707) 525-4061
- Medicaid ID
- 00C320180 CA
- Entity
- Type 1 · individual
8 nearest therapeutic radiology physician records → All 28 in California → Look up another NPI →
Also registered at 121 Sotoyome St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Scott Booth, M.D.Diagnostic Radiology Physician1841237666
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- Marek Bozdech, M.D.Hematology & Oncology Physician1679590509
- Michael Caccavale, MDVascular & Interventional Radiology Physician1518164425
Verify Ronald Lambert Van Roy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C30218Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average therapeutic radiology physician in 2024
12 Medicare Part D claims, against an average of 161 among the 108 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Ronald Lambert Van Roy among 28 therapeutic radiology physician records in California
Ronald Lambert Van Roy, M.D. is one of 28 therapeutic radiology physician records with a practice address in California. 32% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 39% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileNo · 29% of these records are
- Record last updated2025 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0203X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Therapeutic Radiology Physician providers in California
There are 28 therapeutic radiology physician records in California.
All 28 in California → Every provider in Santa Rosa → Therapeutic Radiology Physician nationwide →
The 8 therapeutic radiology physician records with the nearest ZIP codes
- Ralph Hanahan, M.D.Santa Rosa, CA 954031801986641
- Steve Benak, M.D.Riverbank, CA 953671861587727
- Henry Wong, M.D.Stockton, CA 952041376655431
- Florian Ploch, MDVacaville, CA 956871356322705
- Dwight Stickney, M.D.Granite Bay, CA 957461225296676
- John Clark, M.D.Redding, CA 960011174664890
- Don Goffinet, M.D.Palo Alto, CA 943041780724427
- Gordon Ray, MDPalo Alto, CA 943011265591770
Common questions
What is Ronald Lambert Van Roy, M.D.'s NPI number?
Ronald Lambert Van Roy, M.D.'s National Provider Identifier (NPI) is 1720168586, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Lambert Van Roy, M.D. located?
The NPPES record lists a practice address at 121 Sotoyome St, Santa Rosa, CA, 95405. Phone: (707) 525-1150. Providers update this record themselves, so call before visiting.
How can I verify Ronald Lambert Van Roy, M.D.'s license?
NPPES lists California license number C30218, 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 Ronald Lambert Van Roy, M.D. prescribe under Medicare Part D?
In 2024, Ronald Lambert Van Roy, M.D. had 12 Medicare Part D claims; the average among therapeutic radiology physician prescribers was 161. 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.