Dr. Koçak graduated from Hacettepe University School of Medicine in 1996. He completed his residency training in Urology at Türkiye Yüksek İhtisas Hospital in 2001. He finished his transplant surgery fellowship at Northwestern University Feinberg School of Medicine in 2004. He was a faculty member and the Director of the Kidney Transplant Program at Ondokuzmayıs University School of Medicine between 2005 and 2007. He served as the Director of The Kidney and Pancreas Transplant Programs at Memorial Şişli Hospital for over a decade (2007-2018). He was promoted to associate professor in 2011 and became a full professor in 2018. He joined Koç University Hospital as the Director of the Kidney and Pancreas Transplant Programs and a faculty member in 2018. Dr. Koçak is certified by The American Society of Transplant Surgeons for Kidney and Pancreas Transplantation.