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Dr John O'Donohue

Consultant Gastroenterologist

Dr John O'Donohue

Consultant Gastroenterologist

About Dr John O'Donohue

Personal Profile

Dr John O'Donohue is a Consultant Gastroenterologist in London, UK. He has over 20 years’ experience and expertise in gastroenterology at consultant level.

What is important to him in his Practice

'Communication skills are particularly important to me.  I pride myself on being a good listener, first developing a rapport with patients before making a diagnosis and agreeing a treatment plan with them. I also enjoy performing endoscopy well and making it a comfortable and not an off-putting experience. It gives me great satisfaction to see patients get the best treatment, and I take great pride in my excellent feedback from my patients’.

Training and Qualifications

Dr O'Donohue qualified from University of Dublin, Trinity College, in 1987. He was awarded the Blaney Gold medal for First in Medicine, St James' Hospital, in the final medical examinations in 1987.

Dr O'Donohue completed pre-registration training in Dublin before he moved to London in 1990 to undertake his specialist Registrar training in Gastroenterology and Hepatology at the world-famous King's College Hospital Liver Unit and at St. Bartholomew's/Homerton Hospital, London. He undertook laboratory and clinical research in King’s College Hospital resulting in numerous original publications and his post-graduate MD thesis, awarded for original research including numerous original publications in the field of primary biliary cholangiopathy.

After this he completed his specialist training as a Senior Registrar at the Western Infirmary, Glasgow, gaining expensive experience in inflammatory bowel disease. He then returned to London as a Consultant Gastroenterologist in the NHS in 1998, at Lewisham and King’s College Hospital, and started private practice in 2000.

Clinical Experience and Practice

Dr O'Donohue has a comprehensive gastroenterology practice dealing with a range of diseases of both the upper and lower digestive tract, including irritable bowel syndrome, inflammatory bowel disease (Crohn’s and ulcerative colitis), indigestion and heartburn.

Performing high-quality and comfortable endoscopy is a particular interest of his. He has extensive experience in endoscopy and receives referrals for advanced procedures from other doctors. He performs a comprehensive range of endoscopic procedures, including gastroscopy, colonoscopy, sigmoidoscopy, ERCP and capsule endoscopy of the small bowel. He offers patients a choice between local anaesthetic, conscious (mild) sedation, or deep sedation depending on their preference and expectations.

Awards and Recognition

2025-Outstanding-Patient-Experience-Doctify

Management Interests

He is involved in improving and developing endoscopy services nationally and internationally. His is an assessor and quality assurance lead in the JAG (Joint Accreditation Group) for endoscopy, having previously been Chair of the Accreditation Unit at JAG. He is involved in quality assurance of colonoscopy in the Bowel Cancer Screening service in the NHS, as Professional Clinical Advisor for NHS England (London).

Dr O’Donohue has medical management responsibilities as deputy Chief Medical Officer for his NHS Trust. He leads medical engagement in clinical digital technology as Chief Clinical Information Officer, and is outpatient clinical lead.

Teaching and Training

He has been actively involved in teaching and training at both undergraduate and post-graduate level. He is an Honorary Senior Lecturer at King’s College London and, as a Fellow of the Royal College of Physicians, contributes to the writing and quality assurance of post-graduate examinations for doctors.

Personal Life

When he's not being a gastroenterologist, he enjoys hiking, skiing and most of all spending time with his family. This includes four children, three of whom are now taller than him, and three dogs, two of whom are well behaved.

Clinical Interests

  • Bowel cancer screening
  • Inflammatory bowel disease
  • Irritable bowel syndrome
  • Gastroesophageal reflux disease
  • Peptic ulcer
  • Coeliac disease
  • Hepatology

Endoscopy

  • High quality colonoscopy - accredited colonoscopist for the UK Bowel Cancer Screening Programme with particular skill in polypectomy
  • Diagnostic and therapeutic upper GI endoscopy and ERCP, including percutaneous endoscopic gastrostomies (PEG)
  • Video capsule endoscopy

Professional Memberships

  • British Society of Gastroenterology
  • British Association for Study of the Liver

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