Professor Bizos graduated as a doctor in 1983. He qualified as a General Surgeon in 1992.
He was registered with the HPCSA as a Surgical Gastroenterologist in 1998.
He was employed at the CMJAH for 37 years until 2023 and was Academic Head of Surgical Gastroenterology at the University of the Witwatersrand from 2008-2023.
He is currently in full time private practice and is Clinical Head of Surgery at WDGMC. He is a Visiting Adjunct Professor at the University of the Witwatersrand.