Dr Hayat is a Consultant Gastroenterologist and Honorary Senior Lecturer at St George's University Hospitals NHS Trust, having qualified from Imperial College School of Medicine in 2002. He completed his specialist training in London and undertook an MD research degree into the use of advanced diagnostic techniques in upper GI disease. His research was presented nationally and internationally and received awards from the BSG, AGA and UEG.

He has a clinical and research interest in upper GI conditions such as gastro-oesophageal reflux disease (GORD), Barrett's oesophagus, and oesophageal motility disorders. Dr Hayat runs the GI Physiology lab at St George's Hospital, investigating patients with indigestion and swallowing disorders.

Luminal gastroenterology with expertise in reflux disease, swallowing disorders, dyspepsia, irritable bowel syndrome, inflammatory bowel disease, coeliac disease and bowel cancer screening.

Experienced diagnostic and therapeutic endoscopist. Procedures including upper GI endoscopy, colonoscopy, polypectomy, high resolution oesophageal manometry, ambulatory pH-impedance monitoring.

Specialist Commentator for NICE (National Institute of Clinical Excellence) on Gastro-Oesophageal Reflux Disease.

Dr Hayat is an Honorary Senior Lecturer at St George's Hospital Medical School and is currently supervising an MD research student and participate in a number of multinational research studies.