After completing his training, Dr. Berry established Raleigh Hematology-Oncology Clinic in 1979, now Cancer Centers of North Carolina. He has been active in numerous medical organizations, and in the past has served long terms as medical director of Hospice of Wake County, medical coordinator of Rex Cancer Center, and a director on Hospice of Wake County's board of directors. Dr. Berry cares for patients with all types of cancer and blood disorders, but in recent years has had a strong research interest in prostate cancer. He serves as chairman of the Genito-Urinary Cancer Research Committee of US Oncology, a 900-member network of oncologists. In this capacity he has served as principal investigator on several large studies of the use of chemotherapy in hormone-refractory prostate cancer. Dr. Barry is a life-long resident of North Carolina.