Professor Omar Faiz is a Consultant Colorectal Surgeon at St Mark’s Hospital and Professor of Practice in Colorectal Surgery at Imperial College. Professor Faiz is the current Dean of the St Mark’s Academic Institute. He has previously held the positions of Clinical Director (2017-2020) and joint Medical Director (2020-2024) for St Mark’s Hospital.

His areas of clinical interest within colorectal surgery are the surgical management of Inflammatory Bowel Disease (IBD), hereditary cancer syndromes, colorectal cancer and proctology.

He trained in General and colorectal Surgery within London and the South East of England and undertook specialist colorectal fellowships at St Mark’s Hospital and Valencia University Hospital prior to taking up a consultant post at Imperial College in 2008 (St Mary’s Campus) and then taking up a consultant position at St Mark’s hospital in 2012.

Professor Faiz has wide research interests and he has supervised over 20 PhD and MD research fellows at Imperial College. His principal research interests include colorectal surgical epidemiology, health services research and surgical outcome research. He has authored over 300 papers in peer-reviewed journals. He has also authored 11 book chapters and three text books.

Professor Faiz holds, or has held, various leadership positions at a national level. He has held the position of National Clinical Advisor for Lower GI cancer for NHS England. He has also Chaired the Surgical committee for ECCO (European Crohn’s and Colitis). He is the ex-Chairman of the Association of Coloproctology of Great Britain and Ireland (ACPGBI) IBD subcommittee and also Chaired the national Ileal Pouch Registry. He has contributed twice towards guideline development for the ‘IBD Standards’ and also NICE in 2015. Prof. Faiz has previously Chaired an international gastrointestinal surgery initiative of Global Comparators – a benchmarking and quality improvement group comprising sixty highly recognised worldwide academic hospitals (2014-2018). He is an Associate Editor for the journal Colorectal Disease.

In 2018 the Daily Mail published a Good Doctors Guide for IBD, compiled through clinical peer consensus, where Professor Faiz was listed and described as ‘a very good, high volume surgeon at a major centre, supported by an excellent team.