Board of Directors


Thomas Giever_WAHO 2
Thomas Giever, DO, MBA
Assistant Professor, Medicine
Froedtert & the Medical College of Wisconsin


Nataliya Uboha_WAHO
Nataliya Uboha, MD, PhD
Assistant Professor, Department of Medicine
University of Wisconsin


Dean Gruber, RPh
Vice President of Industry Relations
altScripts Specialty Pharmacy


Peter J. Polewski, MD, MA
Aurora Cancer Care

Immediate Past President

Benjamin Parsons_WAHO
Benjamin M. Parsons, DO
Medical Oncologist/Hematologist
Gundersen Health Care System, La Crosse Clinic

Benjamin Parsons, DO, supports and has actively participated in multi-institutional clinical trials, working to advance research in the La Crosse area. He has published works on lung cancer, prostate cancer, elderly patients with cancer, and lymphoma. His clinical interests include lymphoma, multiple myeloma, leukemia, breast cancer, and prostate cancer. 

Dr. Parsons strives to be a physician who respects the wishes of his patients, while working hard to control their disease. Throughout his professional career he has worked to restore patients’ health and improve their quality of life through a holistic philosophy, while embracing the values of compassion, equality, and excellence.


Srinandan Guntupalli, MD
Hematologist/ Medical Oncologist
Bellin Health Cancer Team
Bradley C. Heraly, MD
Hematologist/ Medical Oncologist
Green Bay Oncology
Ascension Mercy Hospital, St Elizabeth Hospital and Calumet Medical Center
Sailaja Kamaraju, MD
Froedtert & the Medical College of Wisconsin
Adedayo Onitilo_WAHO
Adedayo A. Onitilo, MD, PhD, MSCR, FACP
Director, Cancer Care and Research
Marshfield Clinic Health System, Weston Center

Adedayo Onitilo, MD, PhD, MSCR, FACP, is principal investigator of WinCORP, providing access to NCI-sponsored clinical trials to more than 680,000 people in Wisconsin, and parts of Michigan, Iowa, and Minnesota. He is editor-in-chief for Clinical Medicine and Research, and holds a clinical faculty position at the University of Wisconsin.

Dr. Onitilo is board certified in internal medicine, hematology, medical oncology, and hospice and palliative medicine. He earned his medical degree at Ogun State University in Nigeria. He completed his residency at Columbia University, College of Physicians and Surgeons - Harlem Hospital in New York, and fellowship in oncology/ hematology at the Medical University of South Carolina, where he earned a master of science degree in clinical research. Dr. Onitilo earned his doctorate degree in epidemiology from the University of Queensland, Australia.

He is a member of the Wisconsin chapter of the American Cancer Society and Wisconsin Cancer Council Steering Committee.

Kurt Oettel, MD
Director, Gundersen Health System Cancer Center
La Crosse, WI

I have been the Gundersen Health System Cancer Center Director for 10 years. In that period, I have seen many changes driving cancer care within our organization such as precision medicine, staffing shortages, changing treatment paradigms and re-imbursement models just to name a few. In this process of change, cancer care has become a much more complex disease with multiple providers routinely involved in the care of patients and with that it is a significantly more expensive disease to treat. Along with the constant change in cancer care, I too have evolved both as a physician as well as a community cancer center leader.

As cancer center director I have been involved in multiple aspects of the business of cancer care, human resources, financing, risk management, marketing, and information technology. This new set of challenges extended far beyond my medical school training and brought me to pursue an MBA which I completed in May of 2019. I have also realized that as much as I could control and transform within our organization, factors external to our organization are having an outsized influence on cancer care, namely reimbursement models and health care policy decisions. These two factors have led me to be engaged in our state society, the Wisconsin Association of Hematology and Oncology (WAHO) as well our state CDC sponsored program the Wisconsin Cancer Collaborative (WCC) where I sit on the steering committee and chair the policy committee. I have also been involved with the American Society of Clinical Oncology (ASCO). At ASCO I volunteered time with several committees including the Government Relations Committee (GRC) for 3 years as well as leading the State Affiliate Council (SAC) for an additional 3 years. It is with this backdrop that I would like to serve on the Board of Trustees for the Association of Community Cancer Centers (ACCC). I believe that the experience I bring and more importantly the added perspective I could gain, would help me best advocate for the mission of ACCC as well as the patients I treat, and the cancer center I lead. I humbly look forward to the opportunity to serve on the Board of Trustees for the ACCC.

Jonathan S. Treisman, MD
Hematologist/ Medical Oncologist
Ascension Medical Group
Kari Wisinski, MD
University of Wisconsin School of Medicine and Public Health,
UW Carbone Cancer Center

Madison, WI

Dr. Kari Wisinski, an associate professor of Medicine, joined the University of Wisconsin (UW) School of Medicine and Public Health and the UW Carbone Cancer Center in 2008. Her clinical practice centers on the treatment of patients with breast cancer or at high risk for developing breast cancer. She is the physician lead for the breast high-risk clinic and medical director for the inpatient medical oncology service.

Dr. Wisinski’s research focuses on early-phase clinical trials for new agents for breast cancer.  She currently serves as the principal investigator (PI) or study chair on multiple clinical trials, including a CTEP-sponsored investigator-initiated phase I trial, two sub-protocols of the NCI MATCH study, and a R01 funded window-of-opportunity trial.  Since 2012, she has been co-director of the Wisconsin Oncology Network. This is a research network of academic and private practice oncology groups throughout Wisconsin. In 2014, she became co-leader of the Big Ten Cancer Research Consortium Breast Cancer Working Group and helped steer this network’s first breast cancer trials to activation.

She earned her medical degree from Washington University in St. Louis, Missouri. She then completed her residency at the University of Colorado Health Sciences Center and a hematology and medical oncology fellowship at the Robert H. Lurie Comprehensive Cancer Center at Northwestern University in Chicago.

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