Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Grant August Wintheiser, MD

Individual provider Internal Medicine Physician · NPI 1043770092

Grant August Wintheiser, MD is a Hematology/Oncology in Rochester, Minnesota. Graduated from Creighton University School of Medicine in 2019, 7 years ago. Practices with Allina Health System, a 3,867-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Minnesota.

Years since qualifying
7
Trained at
Creighton University School of Medicine
Licensed in
MN
In the registry since
2019
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

200 1st St SW
Rochester, MN 55905-0001
Phone: (507) 284-2511
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 11850 Blackfoot St Nw Ste 300, Coon Rapids, MN 55433-2772 — (763) 236-0808

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 67278 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 67278 (MN)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 67278 (MN)

Record details

NPI number1043770092
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 24, 2019
Last updated in NPPESJuly 20, 2026
Certification dateJuly 20, 2026
Mailing address2925 Chicago Ave, Minneapolis, MN 55407-1321

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolCREIGHTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2019 (7 years in practice)
Group practice Allina Health System — 3867 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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