WAHO 2021-2022 Board of Directors

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.

President-Elect

Ron Kirschling_WAHO
Ron J. Kirschling, MD
Medical Director
Aspirus UW Cancer Center, Wisconsin Rapids

Ron Kirschling, MD, has been a practicing clinician for over 30 years. He is currently a hematologist and medical oncologist in Wisconsin and is board certified in internal medicine, medical oncology, hematology, and palliative medicine. Dr. Kirschling has practiced in many different clinical settings, including emergency room medicine, primary care, and as a flight surgeon with 29 years of service in the Air Force.

Secretary

William Matthaeus_WAHO
William G. Matthaeus, MD
Physician
Aurora Advanced Healthcare

Treasurer

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

Immediate Past President

headshot-Ruth-M-Regan-100x100
Ruth M. O’Regan, MD
Chair and Charles A. Dewey Professor, Department of Medicine
Associate Director for Education and Mentoring
Wilmot Cancer Institute, University of Rochester

Ruth M. O’Regan, MD, 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.

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

Past President

Kurt Oettel_WAHO
Kurt R. Oettel, MD
Medical Oncologist
Gundersen Health Care System, La Crosse Clinic

Members-at-Large

Dean Gruber_WAHO
Dean Gruber, RPh
Vice President of Industry Relations
altScripts Specialty Pharmacy
Sailaja Kamaraju_WAHO
Sailaja Kamaraju, MD
Hematologist/Oncologist
Froedtert & the Medical College of Wisconsin
Daniel Mulkerin_WAHO
Daniel Mulkerin, MD
Regional Director
University of Wisconsin Carbone Cancer Center

Daniel Mulkerin, MD, graduated from Jefferson Medical College. He then completed his residency in internal medicine and fellowship in medical oncology at the University of Wisconsin Hospital and Clinics. Dr. Mulkerin joined the UW Medical School faculty in 1999 and is currently an assistant professor in the department of medicine, section of medical oncology. His clinical expertise is in the treatment of gastrointestinal malignancies, including liver and pancreas, esophageal, stomach, biliary, colon, rectal, and anal cancers. He is actively involved in the development of new therapies for patients with these diseases. Dr. Mulkerin also serves as regional director of the University of Wisconsin Carbone Cancer Center regional cancer center network, which includes affiliate sites in eight communities within Wisconsin and Illinois.

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.

Dhimant R. Patel, MD
System Medical Director
Aurora Cancer Care
Gilberto Rodrigues, MD
Medical Oncologist/Hematologist
Aurora Advanced Healthcare
Federico Sanchez_WAHO
Federico A. Sanchez, MD
System Medical Director, Medical Oncology
Aurora Cancer Care
Nataliya Uboha_WAHO
Nataliya Uboha, MD, PhD
Assistant Professor, Department of Medicine
University of Wisconsin

1801 Research Boulevard Suite 400
Rockville, MD 20850
Tel: 301.984.9496 | Fax: 301.770.1949
waho-wisconsin.com
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