Grant August Wintheiser, MD
Medical Oncology Physician · Rochester, MN
Grant August Wintheiser, MD is a medical oncology physician with a practice address in Rochester, Minnesota, and NPI 1043770092, issued on Mar 24, 2019. Check the license (Minnesota 67278, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Grant August Wintheiser
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 67278 MN
Self-reported in NPPES; status is on the state search - Practice location
- 200 1St St SW, Rochester, MN 55905
- Phone
- (507) 284-2511
- Enumerated
- Mar 24, 2019
- Record last updated
- Jul 20, 2026
- Medicare enrollment
- Enrolled (PECOS I20200810002278); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 159 in Minnesota → Look up another NPI →
Also registered at 200 1St St SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Timothy Aadland, M.D.Diagnostic Radiology Physician1780662783
- Christopher Aakre, MDInternal Medicine Physician1508151663
- Kathryn Aaro, P.T.Physical Therapist1619360666
- Danielle Aase, MDReproductive Endocrinology Physician1316524135
- Uzoamaka Abajue, PHARMDPharmacist1982335295
- Francisco Abarca Rendon, MDIndependent Medical Examiner Physician1790096246
Verify Grant August Wintheiser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 67278Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average medical oncology physician in 2024
241 Medicare Part D claims for 45 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Dexamethasone29 claims
- Prednisone28 claims
- Hydroxyurea19 claims
- Ondansetron Hcl18 claims
- Olanzapine17 claims
- Duloxetine Hcl15 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
- Allina Health SystemSaint Paul, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grant August Wintheiser among 159 medical oncology physician records in Minnesota
Grant August Wintheiser, MD is one of 159 medical oncology physician records with a practice address in Minnesota. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 96% of them.
- NPI issued2019 · 96% of these records are older, under 1% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2019 · median 2004 among the 119 with a school on file
- Record last updated2026 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Minnesota
There are 159 medical oncology physician records in Minnesota.
All 159 in Minnesota → Every provider in Rochester → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Alex Adjei, MD PHDRochester, MN 559051982680583
- Steven Alberts, M.D.Rochester, MN 559051780660209
- Jan Buckner, M.D.Rochester, MN 559051235115262
- Gary Croghan, M.D.Rochester, MN 559051407832421
- Stacy D'Andre, M.D.Rochester, MN 559051629053939
- Paul Haluska, M.D.Rochester, MN 559051790761450
- James Ingle, M.D.Rochester, MN 559051356327670
- Aminah Jatoi, M.D.Rochester, MN 559051437136553
Common questions
What is Grant August Wintheiser, MD's NPI number?
Grant August Wintheiser, MD's National Provider Identifier (NPI) is 1043770092, issued on Mar 24, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Grant August Wintheiser, MD located?
The NPPES record lists a practice address at 200 1St St SW, Rochester, MN, 55905. Phone: (507) 284-2511. Providers update this record themselves, so call before visiting.
How can I verify Grant August Wintheiser, MD's license?
NPPES lists Minnesota license number 67278, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grant August Wintheiser, MD prescribe under Medicare Part D?
In 2024, Grant August Wintheiser, MD had 241 Medicare Part D claims for 45 beneficiaries; the average among medical oncology physician prescribers was 703. 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.