Dr. Curtis was in multispecialty group practice in Internal Medicine from 1984-1987 and served as Assistant Clinical Professor of Internal Medicine at University of Nevada School of Medicine. After completing his second residency in Radiation Oncology, Dr. Curtis joined Nevada Radiation Oncology Centers in 1990 and was one of the founding members of Comprehensive Cancer Centers of Nevada following the merger with Southwest Cancer Clinic in 2000. He also started the Prostate Brachytherapy Program at Summerlin Hospital in 1998 and Intravascular Brachytherapy program in 2004 at Valley Hospital. Dr. Curtis has pioneered and facilitated regular Cancer Conferences and Breast Cancer Conferences at Summerlin Hospital since 2002. For all of his accomplishments and contributions to the healthcare community, Dr. Curtis has been named Top Doctor in the specialty of Radiation Oncology by US News & World Report, Desert Companion, Las Vegas Life, Vegas Seven and Vegas Inc.