Dr John O'Donohue

Gastroenterology, General (internal) medicine


  • Fee assured
  • Accredited endoscopist

Specialises in

  • Endoscopy
  • Hepatobiliary
  • Inflammatory bowel disease

Bupa specialist

  • Accredited endoscopist

About me

Dr John O'Donohue is a Consultant Gastroenterologist at Lewisham and Greenwich NHS Trust and King's College Hospital Foundation Trust. He qualified in 1987, having been awarded the Blaney Gold Medal for First in Medicine and Psychiatry from St James' Hospital Medical School, Trinity College, Dublin. He trained post-qualification at the Liver Unit, King's College Hospital. London, St Bartholomews' and the Homerton Hospitals and the Western Infirmary, Glasgow. He was awarded Fellowship of the Royal College of Physicians, London, in 2001.

Dr O'Donohue now has a comprehensive gastroenterology practice dealing with a wide range of diseases, both of the upper and lower digestive tract. He specialises in irritable bowel syndrome, food intolerances, inflammatory bowel disease and the early diagnosis of bowel cancer.

Dr O’Donohue has a special interest in screening and early diagnosis of bowel cancer and treatment of polyps. He is the lead colonoscopist for the NHS Bowel Cancer Screening Service in London. He is one of a minority of gastroenterologists accredited to perform the often complex and technically demanding colonoscopies in the Bowel Cancer Screening Program.

He has a major interest in endoscopy. He performs high-quality, safe and comfortable colonoscopy, with or without sedation. He is also a specialist in removal of polyps where required (polypectomy), including removal of large polyps, for which he receives referrals from other endoscopists. He also performs gastroscopy, ERCP (endoscopy of the bile ducts) and video capsule endoscopy (small bowel). He is also involved in assessment, training and accreditation of endoscopists, endoscopy units and bowel cancer screening centres for the Joint Advisory Group in Endoscopy, both in the UK and internationally.

Areas of interest

Indigestion; heartburn; Reflux; Barrett's Oesophagus; Dyspepsia; Abdominal pain; capsule endoscopy; Bloating; Constipation; Diarrhoea; irritable bowel syndrome (IBS); food intolerances; bowel cancer screening; inflammatory bowel disease (IBD); Crohn's disease and ulcerative colitis; coeliac disease; endoscopy; OGD gastroscopy; colonoscopy; sigmoidoscopy; pancreatitis; pancreatic cancer; liver diseases; jaundice; Fatty liver; Cirrhosis; ERCP; bile duct and gallstones; polyps; polypectomy, ; rectal bleeding

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