Dr Matthew Johnson

Dr Mathew Johnson is a consultant gastroenterologist, practising at several clinics across Greater London and Hertfordshire. He specialises in diagnostic procedures of the gastrointestinal system, including upper GI endoscopy (covering the oesophagus, stomach and duodenum pathology), oesophageal high-resolution manometry (covering UGI dysmotility issues), capsule endoscopy (covering the small bowel), and flexible sigmoidoscopy & colonoscopy (covering pathology of the lower GI tract or colon). He also has expertise in oesophageal dilatation + stenting, food sensitivities + coeliac disease, malabsorption issues (e.g. iron deficiency), inflammatory bowel disease (ulcerative colitis and Crohn’s), and constipation with colonic dysmotility issues.

Dr Johnson qualified from St Georges University in 1995, and underwent training in the South East Thames region with Guys, St Thomasand Kings College Hospitals. He received an MD in 2009 upon the completion of his research fellowship at St Marks, where he investigated bacterial pathogenesis of inflammatory bowel disease alongside studies into the use of probiotics as therapy. He is dual qualified to practice as a general medicine physician, alongside his primary specialty as a gastroenterologist, and was made a fellow of the Royal College of Physicians in 2013.

Dr Johnson has worked as a Consultant at the Luton & Dunstable University Hospital for 17 years, where he took over as the Clinical Lead for Gastroenterology for many years. Regionally he was know for his work as the Clinical Lead for the Inflammatory Bowel Disease Service, whilst also setting up and running both the Small Bowel Capsule Service and the Oesophageal Laboratory. Throughout his three decades of practice within the NHS, he has performed more than 3,5000 upper endoscopies and 3,000 colonoscopies. He has been the National Lead for Early Adopters of the IBD Registry, and helped design and develop the National IBD Patient Management System. Independently, he continues develop web-based management systems to help both Coeliac and IBD patients. Within the field of private medicine, he has been the Clinical Lead for Gastroenterology at the Harpenden Spire Hospital, and is presently the Clinical Lead for Gastroenterology at the One Stop Healthcare Hospital in Hemel.

In addition to his clinical practice, Dr Johnson is an avid researcher, currently focusing on non-invasive markers of gastric cancer risk and colonic inflammation and tumours, coeliac disease, iron deficiency, pan-enteric capsule, and novel techniques in managing and treating inflammatory bowel disease. He is a regional Advanced Constipation Treatment trainer, which involves teaching other clinicians on the management of IBS and constipation. Dr Johnson has been recognised for his research and his efforts in patient care with six Clinical Excellence Awards.