Dr Mengel is Chair of the Department for Laboratory Medicine and Pathology at the University of Alberta, Edmonton, Canada. He is a sub-specialized Transplantation and Renal Pathologist at the Division of Anatomical Pathology, University of Alberta Hospital. Outside his faculty Dr. Mengel is engaged in various international sub-specialty societies related to nephropathology and organ transplantation: past Chair Transplant Diagnostics Community of Practice in the American Society of Transplantation; Board member International Banff Foundation for Allograft Pathology; President Canadian Society of Transplantation; Board member International Renal Pathology Society.

He studied medicine at the Semmelweiss University in Budapest, Hungary before going on to specialise in pathology and further in transplantation pathology and nephropathology. Before moving to Edmonton he was head of the transplant pathology service at the Hannover Medical School, Germany. Dr. Mengel has published more than 190 peer-reviewed articles and receives several awards of National and International Professional Societies. His current work is focused on applying molecular techniques to biopsy specimens, with the aim to increase diagnostic precision in organ transplantation.