David Harrison, M.D. Hematology and Oncology, Dr. Harrison has been with the Cancer Center since it opened in September of 2000. He completed his undergraduate medical training and Residency at John Hopkins University School of Medicine in Baltimore, Maryland. His Hematology/Oncology Fellowship was completed at the University of Washington, in Seattle, Washington (1974-1976). Dr. Harrison is Board Certified by the American Board of Internal Medicine (1974), Medical Oncology (1977), and Board Certified by the American Board of Internal Medicine in Hematology in 1980.