Visit the ACCC COVID-19 Resource Center & Listserv for Insights on Providing Optimal Patient Care During the Pandemic.

RMOS Board of Directors


Scott Kono
Scott A. Kono, MD
Kaiser Permanente Colorado

A native of Colorado Springs who enjoys outdoor sports, Dr. Kono originally intended to pursue a career in Sports Medicine, but quickly changed to oncology after completing his first clinical experiences. He is currently an oncologist for Kaiser Permanente and has a special focus in the treatment of cancers of the head, neck, and lungs. Dr. Kono believes the key to a strong physician-patient partnership in the fight against cancer is having a close relationship and open communication.


Regina Brown
Regina Brown, MD
University of Colorado Cancer Center

Dr. Brown is Medical Director of Oncology at Lone Tree Medical Center, Assistant Professor of Medical Oncology at the University of Colorado, and a practicing physician at the University of Colorado Hospital. Her primary clinical interest is in breast and pancreatic cancers.


Madeleine Kane
Madeleine Kane, MD
Denver Health, University of Colorado Denver

Immediate Past President

Thomas Purcell
W. Thomas Purcell, MD, MBA
University of Colorado Hospital

Dr. Purcell is the Associate Director for Clinical Services of 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
Rocky Mountain Cancer Centers
Callaway Carlin
Carlin Callaway, DNP
University of Colorado
Allen L. Cohn, MD
Rocky Mountain Cancer Centers

Dr. Cohn is a medical oncologist affiliated with multiple hospitals in the Denver area, including Avista Adventist Hospital and Castle Rock Adventist Hospital.

Dr. Cohn received his medical degree from University of Maryland School of Medicine and has been in practice for more than 20 years.

Rebecca Crank
Rebecca Crank, PA
Kaiser Permanente
Brianna Hoffner
Brianna Hoffner, MSN, ANP-BC, AOCNP
Assistant Professor of Medicine and Lead Advanced Practitioner
University of Colorado Cancer Center

Brianna Hoffner, MSN, ANP-BC, AOCNP, is the lead advanced practice provider for medical oncology at the University of Colorado Hospital, where she provides clinical care to patients with advanced malignancies and research management for patients on clinical trials. Prior to joining the medical staff at the University of Colorado Hospital, she worked as the supervisor of clinical research operations at The Angeles Clinic and Research Institute, an affiliate of Cedars-Sinai.

Ms. Hoffner received her master’s in nursing - adult oncology from Yale University and her bachelor’s in sociology from Boston College.

Wells Messersmith
Wells A. Messersmith, MD
University of Colorado Cancer Center

Dr. Messersmith 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
Alan Miller, MD
SCL Health Cancer Center of Colorado
Matthew Stenmark
Matthew Stenmark, MD
Kaiser Permanente

Fellow Appointee

James Dugan, MD
University of Colorado Cancer Center

1801 Research Boulevard Suite 400
Rockville, MD 20850
Tel: 301.984.9496 | Fax: 301.770.1949
Email Us