Dr Jonathan Landy

Dr Jonathan Landy is a Gastroenterologist currently working at Cleveland Clinic London and his current NHS base is St Mark's Hospital, London (The National Bowel Hospital). Dr Landy is an experienced luminal gastroenterologist and specialist gastrointestinal endoscopist with particular expertise in advanced diagnostic and therapeutic endoscopy. He completed his specialist training in Northwest London before undertaking an advanced endoscopy fellowship at St Mark’s Hospital, one of the UK’s leading centres for intestinal disease. Dr Landy was awarded a PhD from Imperial College London following a research fellowship at St Mark’s Hospital, where he investigated interactions between the gut microbiota and the immune system, with a particular focus on patients with pouchitis. He led the first UK pilot study of faecal microbiota transplantation (FMT) in inflammatory bowel disease (IBD), contributing to the evolving understanding of microbiome-based therapies. He has published extensively in prestigious peer-reviewed scientific journals, presented his work at national and international meetings, and authored book chapters in his field. His current research interests include the diagnosis and management of very early colorectal cancer, IBD endoscopy, artificial intelligence in endoscopy, and endoscopy training and education. Dr Landy serves as Co-Clinical Lead for Endoscopy at St Mark's and is an accredited National Bowel Cancer Screening Programme colonoscopist. His specialist clinical interests include bowel cancer screening, inflammatory bowel disease, and advanced diagnostic and therapeutic endoscopy. Alongside his clinical and research commitments, he has a strong interest in endoscopy training and is actively involved in developing the next generation of endoscopists. He is committed to delivering high-quality, patient-centred care supported by innovation, research, and excellence in training. Alongside his professional work Dr Landy has a keen interest in sports and science fiction novels. Diseases, Medical Tests and Treatments • Endoscopy • Faecal microbiota transplantation • Colonoscopy • Inflammatory bowel disease • Irritable bowel syndrome • Coeliac disease • Diarrhoea • Constipation • Abdominal pain • Reflux

"Evidence-based care tailored to each patient — taking the time to explain options and shared decisions."

1. 2014–2020
   MD · Medicine and Surgery

   Universitat de València

2. 2020–2024
   Residency · Gastroenterology

   Universidad de Navarra

1. 2024-09–2025-08
   Junior consultant

   Universitat de València Teaching Hospital — Gastroenterology

1. 1 Choose a slot
2. 2 Brief pre-consult form
3. 3 Consultation
4. 4 Follow-up note & plan

Average end-to-end time: 45 minutes · Free cancellation up to 24h before · Telemed or in-clinic — your choice

h-index: 11 · i10: 13

Selected publications

1. Long-term follow-up of Gastroenterology across

   Dr Jonathan Landy, et al. · European Journal of Medicine, 2026

   DOI: 10.5570/euroclin.2026.0 · cited by 188

2. Validation of clinical scoring in Gastroenterology

   Dr Jonathan Landy, et al. · European Journal of Medicine, 2025

   DOI: 10.5381/euroclin.2025.1 · cited by 102

3. Long-term follow-up of Gastroenterology across

   Dr Jonathan Landy, et al. · European Journal of Medicine, 2024

   DOI: 10.7884/euroclin.2024.2 · cited by 184

• Patient education Patient guide to Gastroenterology 2026-03-07 · 10 min read
• Awareness When should you see a gastroenterology? 2026-01-06 · 8 min read