RMOS Board of Directors


Scott Kono_RMOS
Scott A. Kono, MD
Medical Oncologist

Scott A. Kono, MD, was honored to serve as chief resident at the University of Kansas School of Medicine and chief fellow during his oncology training at the University of Colorado. After fellowship, Dr. Kono served as an assistant professor at Emory University, primarily treating cancers of the head/neck and lung.

Dr. Kono's areas of focus include gastrointestinal, neuroendocrine, sarcoma, breast, lung, hematologic, head and neck malignancies, and benign hematology. In 2019, he was recognized as Top Doctor by 5280 Magazine.


Madeleine Kane
Madeleine Kane, MD, PhD
Professor, Medicine - Medical Oncology
Denver Health, University of Colorado Denver

Madeleine Kane, MD, PhD, is a professor of medicine, medical oncology at the University of Colorado School of Medicine. Her interests include head and neck cancer, GI malignancies, thyroid cancer, neuroendocrine cancers, and AIDS malignancies. 

Immediate Past President

Thomas Purcell
W. Thomas Purcell, MD, MBA
Executive Medical Director
University of Colorado Hospital

W. Thomas Purcell, MD, MBA is the associate director for clinical services at the University of Colorado Cancer Center and executive  medical director of oncology services at University of Colorado Hospital. He is an active member of the American Society of Clinical Oncology, serving on several committees including the Career Development Committee, Clinical Practice Committee, and Clinical Research Committee. In 2010, Dr. Purcell received the ASCO Statesman Award for his service to the organization.


Bupathi Manojkumar
Manojkumar Bupathi, MD, MS
Medical Oncologist
Rocky Mountain Cancer Centers
Callaway Carlin
Carlin Callaway, DNP, RN
Assistant Professor, Medicine - Medical Oncology
University of Colorado
Allen L. Cohn, MD
Medical Oncologist
Rocky Mountain Cancer Centers

Allen L. Cohn, MD, is a medical oncologist affiliated with multiple hospitals in the Denver area, including Avista and Castle Rock Adventist Hospitals. Dr. Cohn received his medical degree from the University of Maryland School of Medicine and has been in practice for more than 20 years.

Rebecca Crank
Rebecca Crank, PA
Physician Assistant
Kaiser Permanente
Wells Messersmith
Wells A. Messersmith, MD
Professor, Medicine - Medical Oncology
University of Colorado Cancer Center

Wells A. Messersmith, MD, joined the University of Colorado School of Medicine faculty in August 2007 as the director of gastrointestinal medical oncology. He is also the head of the division and co-leader of the development team in the division of medical oncology.

Dr. Messersmith is an active participate in the drug development program and has his own clinical and translational laboratory, funded by the National Cancer Institute, that investigates developmental therapeutics for targeted therapies as well as correlative studies for use on human tissue samples. Outside of the university, Dr. Messersmith is a member of multiple national committees, including NCI GI Steering Committee, NCI Colon Cancer Task Force, National Comprehensive Cancer Network (NCCN) Committee on Colon/Rectal/Anal Cancers, NCCN Investigator Steering Committee, and the Medical Oncology Committee of the American Board of Internal Medicine.

Alan Miller_RMOS
Alan Miller, MD, PhD
Medical Oncologist
SCL Health Cancer Center of Colorado
Matthew Stenmark
Matthew Stenmark, MD
Radiation Oncologist
Kaiser Permanente

Matthew Stenmark, MD, a Denver native, spent his undergraduate years in Vermont at Middlebury College, after which he returned to Denver for medical school at the University of Colorado School of Medicine. He then left the state again for training followed by a faculty position at the University of Michigan. Dr. Stenmark ultimately transitioned back to Denver in 2015 when he took a position with Kaiser Permanente.

Dr. Stenmark has authored more than 30 peer-reviewed publications and continues to actively participate on a national level in the American Society of Radiation Oncology in an effort to continuously improve patient care.

Fellow Appointee

Maria Amaya_RMOS
Maria Amaya, MD, PhD
Chief Fellow
University of Colorado

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Rockville, MD 20850
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