Carol Marie Grabowski, MD
Radiation Oncology Physician · Appleton, WI
Carol Marie Grabowski, MD is a radiation oncology physician with a practice address in Appleton, Wisconsin, and NPI 1669582532, issued on Aug 30, 2006. Check the license (Wisconsin 64957, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Carol Marie Grabowski
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 64957 WI
33288 MN
Self-reported in NPPES; status is on the state search - Practice location
- 3925 N Gateway Dr, Appleton, WI 54913
- Phone
- (920) 749-1171
- Enumerated
- Aug 30, 2006
- Record last updated
- Feb 28, 2025
- Fax
- (920) 749-1172
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 153 in Wisconsin → Look up another NPI →
Also registered at 3925 N Gateway Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Avery AllardFamily Nurse Practitioner1154057214
- Andrea Aragon, NPFamily Nurse Practitioner1740060797
- Carrie Baum, R.D.Registered Dietitian1154447480
- Emily Beyer, NPFamily Nurse Practitioner1720795313
- Daisy Boehm, N.P.Family Nurse Practitioner1194925479
- Renee BrucknerFamily Nurse Practitioner1295614022
Verify Carol Marie Grabowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 64957Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average radiation oncology physician in 2024
110 Medicare Part D claims for 33 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 38 claims were for opioids.
Most prescribed
- Tamsulosin Hcl23 claims
- Hydrocodone-Acetaminophen13 claims
- Ibuprofen12 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): 78.9 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).
Carol Marie Grabowski among 153 radiation oncology physician records in Wisconsin
Carol Marie Grabowski, 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 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 fileNo · 78% of these records are
- Record last updated2025 · 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 Appleton → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Douglas Calvin, M.D.Appleton, WI 549131780677906
- Sara Beltran Ponce, MDAppleton, WI 549151104386671
- Nathan Munson, M.D.Appleton, WI 549111962487512
- Michael Ray, MD PHDAppleton, WI 549111891888269
- Rick Davis, MDOshkosh, WI 549041861460974
- Michael Hsie, MDOshkosh, WI 549041265695704
- Filip Troicki, MDFond Du Lac, WI 549351174756696
- Michael Vander Kooy, M.D.Fond Du Lac, WI 549351760444541
Common questions
What is Carol Marie Grabowski, MD's NPI number?
Carol Marie Grabowski, MD's National Provider Identifier (NPI) is 1669582532, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Carol Marie Grabowski, MD located?
The NPPES record lists a practice address at 3925 N Gateway Dr, Appleton, WI, 54913. Phone: (920) 749-1171. Providers update this record themselves, so call before visiting.
How can I verify Carol Marie Grabowski, MD's license?
NPPES lists Wisconsin license number 64957, 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 Carol Marie Grabowski, MD prescribe under Medicare Part D?
In 2024, Carol Marie Grabowski, MD had 110 Medicare Part D claims for 33 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Carol Marie Grabowski, MD's MIPS final score?
The 2023 MIPS final score is 78.9 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.