Dr Rhys Hewett

Dr Rhys Hewett is a highly experienced Consultant Gastroenterologist with expertise in the diagnosis and management of a wide range of gastrointestinal disorders. Having qualified as a doctor in 2003 and been appointed as a consultant in 2017, he has developed particular expertise in functional gastrointestinal disorders, clinical nutrition, advanced endoscopy, and complex intestinal conditions.

Dr Hewett specialises in the assessment and treatment of functional bowel disorders, including irritable bowel syndrome (IBS), functional dyspepsia, gastroparesis, and other disorders of gut-brain interaction. He also has extensive experience in the diagnosis and management of gastro-oesophageal reflux disease (GORD), oesophageal dysmotility, eosinophilic oesophagitis, Barrett’s oesophagus, inflammatory bowel disease, bowel cancer, and malabsorptive conditions.

A recognised expert in endoscopic procedures, Dr Hewett performs gastroscopy, colonoscopy, and flexible sigmoidoscopy with excellent quality and performance outcomes. He is an accredited colonoscopist for the Bowel Screening Wales programme and is actively involved in training other clinicians in endoscopic techniques. In 2024, he joined Royal Gwent Hospital in an advanced endoscopy role, further expanding his work in complex diagnostic and therapeutic gastrointestinal procedures.

Dr Hewett has a particular interest in clinical nutrition and intestinal failure. Between 2017 and 2024, he served as Clinical Lead for Nutrition and Head of the Welsh Intestinal Failure Service in Cardiff, where he managed patients with complex nutritional disorders, intestinal failure, and malabsorption syndromes.

Alongside his clinical practice, Dr Hewett has a strong commitment to medical education and professional training. He previously served as Educational Faculty Lead for Medicine in Cardiff and currently holds the position of Co-Training Programme Director for Gastroenterology in Wales, overseeing the development and training of future gastroenterology specialists.

Dr Hewett is also academically active and has authored numerous original research papers and review articles published in international gastroenterology journals. He holds a Doctor of Medicine (MD) by Research degree from the University of London.