Dr  Michael  Mendall

Dr Michael Mendall

Consultant Gastroenterologist and Honorary Senior Lecturer


Specialises in

  • Dyspepsia, reflux disease
  • Inflammatory bowel disease
  • Irritable bowel
  • Endoscopy
  • Colonoscopy

Also available for:

Virtual consultations:

I have been a consultant gastroenterologist for 20 years. I graduated from Cambridge University and the Middlesex Hospital Medical School and undertook a variety of training jobs within London. I was a senior registrar at St George's Medical School. I lead the gastroenterology and large inflammatory bowel disease service at Croydon University Hospital.

To date I have performed approximately 10,000 colonoscopies, 15,000 gastroscopies, 3,000 ERCPs, 350 oesophageal pH studies, 300 video capsule endoscopy examinations.

I continue to actively research and have more than 100 publications and have collaborations throughout the world. I have published in many areas of gastroenterology including dyspepsia, reflux disease, irritable bowel, inflammatory bowel disease, oesophageal, stomach and bowel cancer, Barrett's oesophagus and fatty liver disease. I am expert in interventional endoscopy and colonoscopy and other advanced therapeutic endoscopic procedures including ERCP, oesophageal and gastro-intestinal stenting, video capsule endoscopy, and oesophageal manometry and pH studies.

I am currently lead for gastroenterology at Croydon University Hospital. This is a rapidly growing department and has the only unconditionally JAG accredited unit for the next five years in south London following a recent inspection. I also lead the Inflammatory Bowel Disease service and the trust mortality review process. I am a member of the Upper GI Cancer of the National Clinical Intelligence Network and am the London Representative for the British Society of Gastroenterology and sit on the Clinical Standards Committee.

I am an honorary Senior Lecturer at St George's Medical School.

I have made a number of important and internationally recognised contributions to the understanding of gastroenterological and other diseases. I was the first to show that Helicobacter pylori infection of the stomach is mainly caught in childhood, one of the first to demonstrate that many cardiovascular risk factors are manifestations of inflammation, the first to study the role of antibiotics in irritable bowel syndrome, the first to demonstrate how many lifestyle risk factors for colon cancer affect bowel inflammation which is probably the mechanism through which they act.

More recently I was the first to demonstrate that obesity plays a causal role in some types of Crohn's disease which has been replicated by other international studies. I have written extensively on the role of diet in Crohn's disease.


General Medical Council Number: C3095726

Treatment information

Some of the principal treatments carried out by Dr Michael Mendall at Spire include:


Other treatments

  • ERCP
  • Duodenal and Colonic Stenting
  • Oesophageal stenting
  • Oesophageal physiology and pH studies

Get in touch

Important information about Covid-19 tests

COVID-19 testing or antibody tests are not available as a standalone service at Spire St Anthony's Hospital.


Marketing Information

Spire would like to provide you with marketing information about products and services offered by Spire and by selected third-party partners. If you do not consent for us to process your personal data for marketing activities, we will still be able to contact you about your enquiry.

We may contact you by email, SMS or phone about your enquiry. If we try to contact you by phone (mobile and/or landline) and you are not available, we may leave you a voicemail message. We may also use your details to contact you about patient surveys we use for improving our service or monitoring outcomes, which are not a form of marketing.

Submit my enquiry

Additional information

Bowel disease
Gastrointestinal cancer
Gastrointestinal pathology
Inflammatory bowel disease
Liver disease
Motility disorder

Professional leadership

Lead Gastroenterologist at Croydon University Hospital
Head of Mortality Review at Croydon University Hospital

Croydon University NHS Trust