WAHO Board of Directors


Ruth M. O’Regan, MD
Associate Director, Clinical Research
University of Wisconsin Carbone Cancer Center
Madison, Wisconsin

Ruth M. O’Regan, MD, is the associate director for clinical research at the University of Wisconsin School of Medicine and Public Health. She has recently been named chief scientific officer of the Big Ten Cancer Research Consortium, where she will guide the consortium's research and scientific mission.

Dr. O'Regan's research focuses on identifying mechanisms of resistance to breast-cancer therapies and the development of new therapies with a specific focus on triple negative breast cancer. She has led several trials focused on new therapeutic approaches for breast cancers resistant to standard therapies.

She earned her medical degree from University College Dublin,  and completed her internal medicine residency at the Medical College of Wisconsin and her hematology/oncology fellowship at Northwestern University.


Benjamin M. Parsons, DO
Gundersen Health System
La Crosse Clinic


Ron J. Kirschling, MD
Aspirus U.W. Cancer Center


Daniel Mulkerin, MD
University of Wisconsin Carbone Cancer Center

Immediate Past President

Kurt R. Oettel, MD
Gundersen Health System


Christopher Chitambar
Christopher Chitambar, MD
Medical College of Wisconsin
Thomas Giever, MD
Medical College of Wisconsin
Dean Gruber, RPh
altScripts Specialty Pharmacy
Christopher R. Hake, MD
Waukesha Memorial Hospital
William G. Matthaeus, MD
Aurora Advanced Healthcare
Dhimant R. Patel, MD
Aurora Cancer Care
Gil A. Rodrigues, MD
Aurora Advanced Healthcare
Federico A. Sanchez, MD
Aurora Cancer Care

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Rockville, MD 20850
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