Michael J. Vander Kooy, M.D.
Radiation Oncology Physician · Fond Du Lac, WI
Michael J. Vander Kooy, M.D. is a radiation oncology physician with a practice address in Fond Du Lac, Wisconsin, and NPI 1760444541, issued on Apr 5, 2006. Check the license (Wisconsin 37647, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Michael J. Vander Kooy
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 37647 WI
Self-reported in NPPES; status is on the state search - Practice location
- 480 E Division St, Fond Du Lac, WI 54935
- Phone
- (920) 926-4100
- Enumerated
- Apr 5, 2006
- Record last updated
- Oct 21, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (920) 926-4190
- Medicaid ID
- 32451900 WI
- Medicare enrollment
- Enrolled (PECOS I20091110000604); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 153 in Wisconsin → Look up another NPI →
Also registered at 480 E Division St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelly Hagner, APNPFamily Nurse Practitioner1144827734
- Michael Jones, MDHematology & Oncology Physician1164403226
- Eugene Lambert, MDHematology & Oncology Physician1376524678
- Rebecca Lentscher, APNPFamily Nurse Practitioner1902174089
- Lisa Michels, APNPAdult Health Nurse Practitioner1952735516
- Sameer Tolay, MDHematology & Oncology Physician1376899393
Verify Michael J. Vander Kooy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 37647Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% more Medicare Part D claims than the average radiation oncology physician in 2024
147 Medicare Part D claims for 55 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Tamsulosin Hcl111 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.
Bills Medicare through one group practice
- Agnesian Healthcare IncFond Du Lac, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael J. Vander Kooy among 153 radiation oncology physician records in Wisconsin
Michael J. Vander Kooy, M.D. is one of 153 radiation oncology physician records with a practice address in Wisconsin. 88% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 55% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated1993 · median 2008 among the 119 with a school on file
- Record last updated2020 · 44% 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 Wisconsin 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 Wisconsin
There are 153 radiation oncology physician records in Wisconsin.
All 153 in Wisconsin → Every provider in Fond Du Lac → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Filip Troicki, MDFond Du Lac, WI 549351174756696
- Hong Wang, M.D.Fond Du Lac, WI 549351114938156
- Sara Beltran Ponce, MDAppleton, WI 549151104386671
- Douglas Calvin, M.D.Appleton, WI 549131780677906
- Carol Grabowski, MDAppleton, WI 549131669582532
- Nathan Munson, M.D.Appleton, WI 549111962487512
- Michael Ray, MD PHDAppleton, WI 549111891888269
- Rick Davis, MDOshkosh, WI 549041861460974
Common questions
What is Michael J. Vander Kooy, M.D.'s NPI number?
Michael J. Vander Kooy, M.D.'s National Provider Identifier (NPI) is 1760444541, issued on Apr 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Vander Kooy, M.D. located?
The NPPES record lists a practice address at 480 E Division St, Fond Du Lac, WI, 54935. Phone: (920) 926-4100. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Vander Kooy, M.D.'s license?
NPPES lists Wisconsin license number 37647, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael J. Vander Kooy, M.D. prescribe under Medicare Part D?
In 2024, Michael J. Vander Kooy, M.D. had 147 Medicare Part D claims for 55 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.