Professor Omar Khan


MA, PhD, FRCS, PGCE (Med Ed), PGDip (Law)


General Surgery

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Professor Khan is a Consultant General Surgeon with a specialist interest in Weight-loss (Bariatric) Surgery. He studied at the University of Cambridge, and undertook his clinical training in Nottingham and Southampton (where he completed a PhD in obesity and cardiovascular disease) before being appointed as a Consultant Surgeon in Gastrointestinal and Bariatric Surgery at St Georges Hospital, London, where he is also the lead general surgeon for Trauma.

Professor Khan is on the National Bariatric Registry Committee (the body responsible for publishing consultant outcomes in bariatric surgery). He also acts as an expert witness for court case providing specialist opinions on medicolegal cases.

He has an active interest in research and is an Honorary Senior Clinical Lecturer at St Georges Medical School. He has published over 160 articles  and his weight-loss research has been published in the Lancet and was featured in national and international press.

Special interests

Professor Omar Khan is a Consultant General Surgeon with a specialist interest in Weight Loss (Bariatric) Surgery. He has an expertise in minimally-invasive (or keyhole surgery) including “scarless” surgery and has performed over 1,000 keyhole procedures.

His clinical interests include:

  • Gastric sleeve
  • Gastric bypass (including the mini- gastric bypass)
  • Gastric band
  • Gastric Balloon
  • Revisional weight loss surgery
  • Gallstones and gall bladder surgery
  • Hernia repair surgery

Treatments and tests offered by Professor Omar Khan at Nuffield Health

  • Gastric band (lap banding)
  • Gastroscopy (or gastrointestinal (GI) endoscopy)
  • Diagnostic endoscopy
  • Gastric balloon (BiB)
  • Hernia repair
  • Sleeve gastrectomy
  • Gastric bypass
  • Cholecystectomy (Gallbladder removal)

Locations Professor Omar Khan works with

Related experience


  • Fellow of Royal College of Surgeons
  • Member of the Association of Upper Gastrointestinal Surgeons
  • British Obesity and Metabolic Surgery Society
  • International Federation of Obesity Surgery

Other posts held

  • St George's University Hospitals NHS Foundation Trust