Dr. Derrick Koo is a radiation oncologist based in Roseville, California. He has been in practice for the past 18 years. Dr. Koo graduated in 1999 from the Virginia Commonwealth University. He completed a residency program at the Wake Forest University and another residency at the Virginia Commonwealth University Health System. Dr. Koo is a board-certified specialist in Radiation Oncology. He is currently affiliated with the Kaiser Permanente Roseville Medical Center and Kaiser Permanente Sacramento Medical Center.