Gregory Kauffmann, MD
Radiation Oncology Physician · Milwaukee, WI
Gregory Kauffmann, MD is a radiation oncology physician with a practice address in Milwaukee, Wisconsin, and NPI 1326480245, issued on Jul 19, 2013. Check the license (Wisconsin 68600-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Kauffmann
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 68600-20 WI
125063200 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2900 W Oklahoma Ave, Milwaukee, WI 53215
- Phone
- (414) 649-6420
- Enumerated
- Jul 19, 2013
- Record last updated
- Jul 12, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (414) 649-5309
- Medicare enrollment
- Enrolled (PECOS I20180810000490); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 153 in Wisconsin → Look up another NPI →
Also registered at 2900 W Oklahoma Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Islam Abo Al Nadie, MDHospitalist Physician1326618786
- Zaid Abood, MDHospitalist Physician1194254334
- Syed AbutalibHematology & Oncology Physician1114183290
- Kalid Adab, MDHematology & Oncology Physician1346473345
Verify Gregory Kauffmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 68600-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average radiation oncology physician in 2024
84 Medicare Part D claims for 49 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl26 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
- Radiation Oncology Associates LtdSheboygan, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Kauffmann among 153 radiation oncology physician records in Wisconsin
Gregory Kauffmann, MD 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 2013, is newer than 70% of them.
- NPI issued2013 · 70% of these records are older, 26% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2013 · median 2008 among the 119 with a school on file
- Record last updated2018 · 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 Milwaukee → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Kenneth Bastin, MDMilwaukee, WI 532151457393431
- Kelsey Corrigan, MDMilwaukee, WI 532151750841532
- Jeffrey Kittel, M.D.Milwaukee, WI 532151801188230
- Daniel Lindsay, M.D.Milwaukee, WI 532151124413422
- Mitchell Pincus, MDMilwaukee, WI 532151265479760
- Jennifer Stanley, M.D.Milwaukee, WI 532151518493105
- Ranjini Gandhavadi, M.D.Milwaukee, WI 532111518958057
- Craig Schulz, M.D.Milwaukee, WI 532111316938855
Common questions
What is Gregory Kauffmann, MD's NPI number?
Gregory Kauffmann, MD's National Provider Identifier (NPI) is 1326480245, issued on Jul 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Kauffmann, MD located?
The NPPES record lists a practice address at 2900 W Oklahoma Ave, Milwaukee, WI, 53215. Phone: (414) 649-6420. Providers update this record themselves, so call before visiting.
How can I verify Gregory Kauffmann, MD's license?
NPPES lists Wisconsin license number 68600-20, 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 Gregory Kauffmann, MD prescribe under Medicare Part D?
In 2024, Gregory Kauffmann, MD had 84 Medicare Part D claims for 49 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.