About Jason Dunn
Dr Jason Dunn, Consultant Gastroenterologist, is based in London working within the Guy's and St Thomas' Hospitals and privately within the London Bridge Hospital and One Welbeck. He is highly specialised in Oesophageal diseases including GERD, LPR, EoE, Achalasia and Barrett's oesophagus. He is one of few specialists in the UK that practice therapeutic endoscopy in the oesophagus, including POEM for acahalsia, Esoflip/Endoflip, HALO Radiofrequency Ablation (RFA) (for Barrett's oesophagus and also inlet patch) and Endoscopic Mucosal Resection (EMR) throughout the GI tract for polyps and early cancer.
Dr Dunn has an extensive research interest with over 200 research publications in high-impact medical journals and several book chapters, with 1850 citations. He was awarded the CRUK clinical fellowship at UCL examining the use of optical diagnostics and minimally invasive therapies for the treatment of Barrett's oesophagus. He was later awarded a PhD for this work. His continued work in the field of Barrett's oesophagus, and biomarkers to predict cancer progression has won him several awards. He continues to contribute back to medical education by holding the position of Honorary Associate Professor at Kings College London.
Dr Dunn has had a very successful career in which he has established a regional Endo-therapy centre at St Thomas for the South East region, written guidelines for the management of Barrett's oesophagus, and been Clinical Lead for Endoscopy at Guy's and St Thomas' Hospitals. Additionally, he was the Research Lead for the Oesophageal Section of the British Society of Gastroenterology and remains on the Education committee. He is the medical advisor to the charity- Action against Heartburn.
Expertise
- Bowel Disease
- IBD
- Crohn’s Disease
- Ulcerative Colitis
- Colon Polyps
- Lynch Syndrome
- Diarrhoea
- Abdominal Pain
- Indigestion
- Dyspepsia
- Constipation
- Reflux
- Barrett’s Oesophagus
- HALO Radiofrequency Ablation
- Endoscopic Mucosal Resection
- Inlet Patch
- Globus
- Eosinophilic Oesophagitis
Overview
- Age of patients seen
- 18+
- Qualifications
PhD
MRCP
BSc
- Languages spoken
- English
- Online profiles
- Professional memberships
Member of the British Society of Gastroenterology
Member of the American Gastroenterological Association
Member of the British Association for Parenteral and Enteral Nutrition.
Consultations and services
- Self-pay available from £290
- Health insurance
- 30 mins consultation
- Self-pay available from £180
- Health insurance
- 15 mins consultation
Insurers covered
Tests & treatments
Conditions & symptoms
Locations
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Frequently asked questions
Yes, but only for certain services. Some consultations, assessments, and treatments can be booked directly, while others require a GP or specialist referral. Please check the relevant service page for guidance, and contact the centre if you’re unsure.
We aim to offer appointments as quickly as possible, and many services have same-day or next-day availability. Waiting times vary depending on the appointment type, specialty, and consultant availability, but our team will always offer the earliest suitable appointment.
Yes. You can arrange an appointment for a family member, or someone you care for, just let us know when you get in touch. We’ll need their details and consent to complete the booking, unless you're their legal guardian or have power of attorney.
Your first consultation includes a detailed discussion of your symptoms, medical history, and lifestyle factors, followed by a thorough examination. It’s helpful if you can bring the results of any previous investigations with you, as well as a list of your current medications. Come with a comfortably full bladder so you can provide a urine sample if requested.