Hematology
Stephen Ansell, M.D.
Professor of Medicine / Chair, Division of Hematology
Rochester, MN
Dr. Stephen Ansell is Professor of Medicine and Chair of the Division of Hematology at Mayo Clinic in Rochester, Minnesota. He also serves as Co-leader of the Hematological Malignancies Program and Interim Chair of the Department of Oncology. He earned his MB ChB and PhD from the University of Pretoria in South Africa before completing residency and fellowship at Mayo Clinic. Dr. Ansell is a leading authority on lymphoma, with research focusing on the tumor microenvironment and immunotherapy app
40+
Years in Practice
Credentials
Board Certifications
- Internal Medicine
- Hematology
- Medical Oncology
Education & Training
- MB ChB: University of Pretoria, South Africa (1986)
- PhD: Medical Sciences, University of Pretoria
- Residency: Mayo Clinic (Internal Medicine, 1994-1996)
- Fellowship: Mayo Clinic (Hematology and Medical Oncology, 1996-1999)
Peer Recognition
- Castle Connolly — Top Doctor
2012-2026 (15 years)
Clinical Focus
Subspecialties
Malignant Hematology
Conditions & Treatments
LymphomaCAR-T Cell TherapyChronic Lymphocytic LeukemiaLeukemia
Practice Details
Hospital Affiliations
- Mayo Clinic - Rochester, MN
Experience
40+ years in practice