- Bupa Platinum consultant
- Fee assured
- Verified account
- Open Referral network
- Accredited endoscopist
- Accredited endoscopist
- Video and telephone consultations
Dr Walker has been working as a Gastroenterology Consultant in Bath since 2013 and is currently the lead for inflammatory bowel disease (IBD) at the Royal United Hospital, Bath.
He qualified with distinction from Imperial College London in 2000 and did his gastroenterology training in London on the North West Thames Gastroenterology rotation, working at a number of teaching hospitals including St Markâ€™s Hospital, St Maryâ€™s Hospital, and Charing Cross Hospital. This provided him with excellent training in all aspects of gastroenterology.
Dr Walker subsequently spent three years as a clinical research fellow at Imperial College London studying the role of genetics and gut bacteria in the aetiology of inflammatory bowel disease, and was awarded a Doctorate of Medicine in 2011. He has published his research in a number of international peer reviewed medical journals. In addition, he has written five book chapters and given invited talks for the charity Crohn's and Colitis UK.
Dr Walker is an accredited endoscopist (for gastroscopy, flexible sigmoidoscopy & colonoscopy) with the Joint Advisory Group of GI Endoscopy (JAG). He is also a national endoscopy trainer for JAG, teaching on endoscopy training courses in the UK, with excellent validated feedback.
Dr Walker has a keen interest in teaching, he completed a Postgraduate Certificate in Medical Education at the Royal College of Physicians/University College London and is a Honorary Senior Clinical Lecturer at the University of Bristol .
Areas of interest
Change in bowel habit; Irritable bowel syndrome (IBS); Inflammatory bowel disease (Crohnâ€™s disease, ulcerative colitis); Colorectal cancer; Gastrointestinal effects of pelvic radiotherapy; Coeliac disease; Endoscopy (colonoscopy, sigmoidoscopy, gastroscopy); Dyspepsia (indigestion); Gastro-oesophageal reflux; Abdominal pain;
- Gemma Adams
- BMI Bath Clinic Longwood House Claverton Down Road Combe Down Bath BA2 7BR
Current NHS consultant posts held
Royal United Hospital, Bath
Inflammatory bowel disease; Medical education
Clinical Excellence Award 2016 & 2020.
Walker DG, Williams HRT, Bancil AS, Sato H, Rai P, Pantelidis P, Chambers JC, Kooner JS, Orchard TR. Ethnicity differences in genetic susceptibility to ulcerative colitis: a comparison of Indian Asians and white Northern Europeans. Inflammatory Bowel Disease 2013; 19: 2888-94
Williams HR, Willsmore JD, Cox IJ, Walker DG, Cobbold JF, Taylor-Robinson SD, Orchard TR. Serum metabolic profiling in inflammatory bowel disease. Dig Dis Sci. 2012 Aug;57(8):2157-65.
Walker DG, Williams HRT, Kane SP, Mawdsley JE, Arnold J, McNeil I, Thomas HJW, Teare JP, Hart AL, Pitcher MCL, Walters JR, Marshall SE, Orchard TR. Differences in inflammatory bowel disease phenotype between South Asians and Northern Europeans living in North West London, United Kingdom. American Journal of Gastroenterology 2011 Jul;106(7):1281-9
Williams HR, Cox IJ, Walker DG, Cobbold JF, Taylor-Robinson SD, Marshall SE, Orchard TR. Differences in gut microbial metabolism are responsible for reduced hippurate synthesis in Crohn's disease. BMC Gastroenterology 2010; 17, 10(1):108
Williams HR, Walker DG, North BV, Taylor-Robinson SD, Orchard TR. Metabonomics in ulcerative colitis. J Proteome Res 2010; 9(5): 2794-2795
Williams HRT, Cox J, Walker DG et al. Characterization of Inflammatory Bowel Disease with Urinary Metabolic Profiling. American Journal of Gastroenterology 2009; 104: 1435-1444.
Walker D and Orchard T. Do extraintestinal manifestations predict disease course, severity, and/or activity in IBD? Inflammatory Bowel Disease 2008; 24; 14 (S2):200-201.
Williams H, Walker D, Orchard T. Extraintestinal manifestations of inflammatory bowel disease. Current Gastroenterology Reports 2008; 10(6):597-605.
Walker R, Walker DG, Husain M, Kennard C. Control of voluntary and reflexive saccades. Experimental Brain Research 2000; Vol 130 Feb II, p540-544
Patient Experience Surveys:
Excellent feedback from an externally validated patient satisfaction survey (2015) (n=30: average score: 3.99/4). 96.6% of patients gave the highest mark in all domains, 100% of patients stating they were â€˜very satisfied with the care providedâ€™.
Feedback from a National Inflammatory Bowel Disease patient survey in 2015 (n=15): 82% of patients rated the care given by Dr Walker as excellent & 18% as very good.
- MD (Res) Imperial College London 2011
- FRCP Royal College of Physicians (London) 2004
- MBBS Imperial College London 2000
- Post Graduate Certificate in Medical Education University College London/Royal College of Physicians 2010
- BSc (Hons) Imperial College London 1997
Reference number 4739490
Details of entry to specialist register
- CCT in Gastroenterology and General (Internal) Medicine , 2012
Affiliations / memberships
British Society of Gastroenterology
Fellow of the Royal College of Physicians
Higher Education Academy
Post treatment communication
Following treatment of a Bupa member, I will communicate with GPs in line with Department of Health, GMC and appropriate professional bodies guidelines.
Information for healthcare professionals (Bupa patients only, last 12 months)
IV sedation administered by operator - (5-50)
Therapeutic colonoscopy with snare loop biopsy or excision of lesion - (5-50)
Diagnostic oesophago-gastro-duodenoscopy (OGD) includes forceps biopsy, biopsy urease test and dye spray - (5-50)
Diagnostic colonoscopy, includes forceps biopsy of colon and ileum - (5-50)
Diagnostic oesophago-gastro-duodenoscopy (OGD) and immediate colonoscopy includes forceps biopsies, biopsy test and dye spray (as sole procedure) - (1-5)
Bath Clinic (1-5)
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