• world class surgeons

World Class Surgeons



Should you choose to proceed with the National Obesity Surgery Centre you can be assured of the best possible service at all times.

Our team of leading surgeons reads like a who’s who of expertise in the weight loss sector. With clinics in every location in the UK staffed by uniquely qualified surgeons and first class health care professionals.

Dr John Mason MD, FRCP – Medical Advisor

Dr Mason is a Consultant Gastroenterologist at Trafford General Hospital (part of the Central Manchester University NHS Trust). With a personal series well in excess of 10,000 upper GI endoscopies, he was the ideal choice … Read more »

Mr David Hewin BSc, MB, ChB, MD, FRCS (Gen Surg)

Mr David Hewin is a consultant general surgeon in Gloucestershire specializing in laparoscopic (key-hole) surgery including surgical procedures for obesity. Having qualified in medicine from Bristol University, he trained in surgery both in the UK and abroad and is now… Read more »

Dr Purushothaman Premchand MBBS, MD, MRCP

Dr Premchand is a Consultant Gastroenterologist and is currently the Endoscopy Lead of Barking, Havering and Redbridge NHS Trust. The BHRT Gastroenterology Unit consists of ten gastroenterologists and ten surgeons and is a major centre for gastroenterology. He recently set… Read more »

Mr Zaher Toumi

I am a consultant Bariatric and Upper Gastrointestinal Surgeon. I have a great deal of compassion for people affected by obesity and passion for the treatment of obesity and Type 2 Diabetes. I have experience in the whole range of effective bariatric and metabolic procedures and offer the … Read more »

Mr Marcus Reddy Professor

Mr Reddy is a leading Consultant General Laparoscopic Upper GI and Bariatric Surgeon. He is fully accredited on the UK General Medical Council’s Specialist Register for general surgery with a nominated special interest in upper gastrointestinal and hepato-pancreato-biliary surgery. He is also a member of the committee overseeing the National bariatric Surgery in… Read more »

Mr Yashwant Koak MS, FRCS, MBChB, MDCH, MBA

Mr Koak is a Consultant General, Laparoscopic, Bariatric and Upper GI Surgeon who has performed in excess of 5000 operations. Mr Koak qualified in medicine from the University of Glasgow and did his Basic Surgical training at the Chelsea and… Read more »

Mr James Rink MB BChir, M Phil, FRCS (Eng)

Mr. Rink is a Consultant Surgeon and Clinical Lead for Upper-GI and Bariatric Surgery in Shrewsbury Hospital. Following his graduation from Cambridge University Medical School, Mr Rink worked in East Anglia, the South West and… Read more »

Mr Christopher Shearer Consultant General Surgeon

Mr Christopher Shearer is a Consultant General Surgeon with subspecialty interests in upper gastrointestinal, laparoscopic and weight loss surgery. His NHS practice is based at Forth Valley Royal Hospital. He is the Deputy Lead Clinician for the … Read more »

Mr James Hopkins MA DPhil FRCS

Mr James Hopkins is a specialist UGI and Metabolic Surgeon, Bariatric Endoscopist, and the Clinical Lead for GI Emergency Surgery at North Bristol NHS Trust. He is the Local Principal Investigator for National Bariatric Surgery … Read more »








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National Obesity Surgery Centre

* All patient reviews on our website are based on that individual's experience and may vary from person to person.