Dr. Nikitas grew up in the Chicago suburbs. He attended Washington University in St. Louis and graduated with a degree in Biochemistry. His experience studying pediatric leukemia solidified his interest in becoming a physician and specializing in oncology. Dr. Nikitas attended medical school at Washington University School of Medicine in St. Louis. He conducted research in patients undergoing lung stereotactic body radiation therapy in the setting of multiple primary lung cancers and oligometastatic disease involving the brain. He returned to Chicago for his transitional year of residency at the University of Chicago (Northshore). Afterwards, he moved to Los Angeles to join the Radiation Oncology Residency Program at UCLA.