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Mr Omar Khan
MA, MB B CHIR, PhD, FRCS (General Surgery), PGCE, PGDip (Law)
General Surgery
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Upper GI (Gastrointestinal) Surgery
Weight Loss & Bariatric Surgery


General Medical Council: 4476317




Mr Omar Khan is a Consultant General Surgeon who currently practices at a number of locations in the UK, including Ashtead, Surrey, Oxford, and North Cheam.  His specialities include gastrointestinal and weight loss/bariatric surgeries, with particular expertise in minimally-invasive procedures (sometimes known as keyhole surgeries), which are often called “scarless” surgery for their limited size, scarring, and quick recovery.  The doctor has performed over 1,000 keyhole procedures, making him a seasoned veteran in this area.  

Mr Khan began his medical training with his BChir (Bachelor of Surgery) from Cambridge in 1997, followed quickly by his MB in 1998.  He received his clinical training on rotations in Nottingham and Southampton and was granted his PhD in obesity and cardiovascular disease.  The doctor then went on to be appointed as a consultant Surgeon of Gastrointestinal and Bariatric Surgery at St. George’s Hospital in London, where he also remains as the lead general surgeon for Trauma.  

Mr Khan was also inducted as a Fellow into the Royal College of Surgeons and is a member of several professional societies, including membership in the Association of Upper Gastrointestinal Surgeons, British Obesity and Metabolic Surgery Society, and the International Federation of Obesity Surgery.  In addition, the doctor is on the National Bariatric Registry Committee.

He also is active in several other areas, including being an expert witness for court cases where specialist opinions on medically-related legal matters are concerned.  He continues to be involved in research and is an Honorary Senior Clinical Lecturer at St. George’s Medical School in London.  Mr Khan has over 160 published articles to his name, and his research into weight loss and bariatric surgery has been published in the prestigious medical journal Lancet, gaining him much national and international press.  

Mr Khan is committed to providing weight loss surgical solutions to his patients, in as minimally invasive a manner as possible.  The goal is to provide patients with the surgical means to augment their own weight loss efforts and help to reduce, reverse, or eliminate the obesity-related disease.  He is an expert in procedures such as gastric sleeve, band, bypass, and balloon weight loss methods, as well as related gastrointestinal surgeries such as hernia repair, gallstone removal, gallbladder surgery, and similar.  For patients in need of weight loss surgery or related surgeries, Mr Khan is an exceptional, highly-trained and diligent surgeon – an exceptional choice for your health.   

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Medical Procedures

  • Gastric sleeve 
  • Gastric band 
  • Gastric bypass 
  • Gastric Balloon 
  • Revisional weight loss surgery 
  • Gallstones and gall bladder surgery             
  • Hernia repair surgery

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Special Interests

  • Bariatric, gallbladder and hernia repair surgery.


Professional Memberships
Council member of the Royal College of Surgeons, England, since 2010.
Fellow of British Orthopaedic Association
Editorial Board Member - The Bone & Joint Journal
Editorial Board Member - INJURY


Primary Medical Qualification
BChir 1997 University of Cambridge
MB 1998 University of Cambridge

Specialist Register entry date
General surgery From 21 Dec 2011


Professional Memberships


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