Mr Shamsi El Hasani

Mr Shamsi El-Hasani is a Consultant Upper Gastrointestinal, Bariatric and Laparoscopic Mr Shamsi El-Hasani is a Consultant Upper Gastrointestinal, Bariatric and Laparoscopic Surgeon and expert witness at Princess Royal University Hospital, King's College Hospital NHS Foundation Trust, where he has served as a Consultant since 1999. His principal areas of clinical expertise include upper gastrointestinal surgery, bariatric and weight-loss surgery, laparoscopic surgery, anti-reflux and hiatus hernia surgery, cholecystectomy, and abdominal wall and inguinal hernia repair.

With more than 25 years' experience as a consultant surgeon, Mr El-Hasani manages a broad range of complex upper gastrointestinal and bariatric conditions using advanced minimally invasive surgical techniques. He has performed several thousand laparoscopic procedures, including gastric bypass, sleeve gastrectomy, gastric band surgery, revisional bariatric surgery, cholecystectomy and hernia repair, and continues to provide both NHS and private care for patients requiring specialist upper GI and weight-loss surgery. In addition to his clinical practice, he has held the role of Lead Clinician for the Department of General Surgery, reflecting his senior leadership within the specialty. He also maintains a strong academic profile, having authored more than 200 peer-reviewed publications in upper gastrointestinal and bariatric surgery, demonstrating his ongoing contribution to the advancement of surgical practice and patient care.

Mr Shamsi El-Hasani has been undertaking medico-legal work since 2025, providing independent expert opinion in clinical negligence and personal injury claims. He accepts instructions on behalf of claimants and prepares reports addressing screening and advisory opinions, breach of duty, causation, and condition and prognosis. His medico-legal practice focuses on matters arising within his specialist field of upper gastrointestinal, bariatric and laparoscopic surgery, including the assessment of cases involving complex upper GI conditions, weight-loss surgery, anti-reflux and hiatus hernia surgery, cholecystectomy, hernia surgery and other minimally invasive surgical procedures. Drawing on extensive consultant-level clinical experience, Mr El-Hasani provides clear, evidence-based opinions to assist solicitors and the courts in the evaluation of surgical care and its outcomes. He has also completed formal expert witness training to support the delivery of high-quality medico-legal reports.

Mr El-Hasani's current clinical practice is centred on the assessment and surgical management of patients with upper gastrointestinal and bariatric disorders, with a particular emphasis on minimally invasive techniques. He routinely manages individuals requiring treatment for obesity and weight-related conditions, gastro-oesophageal reflux disease, hiatus hernias, gallbladder disease and abdominal wall and inguinal hernias, providing comprehensive care from assessment through to surgical intervention and follow-up.

A significant proportion of his practice involves complex bariatric and revisional bariatric procedures, including gastric bypass, sleeve gastrectomy and gastric band surgery, alongside laparoscopic cholecystectomy and hernia repair. He also undertakes the management of patients with challenging upper gastrointestinal conditions requiring advanced laparoscopic surgery, applying evidence-based techniques to optimise patient outcomes. His specialist expertise encompasses both primary and revision surgery, enabling him to treat patients with complex presentations and those requiring further intervention following previous procedures. Through his ongoing clinical practice, he remains actively involved in the delivery of specialist upper gastrointestinal and bariatric surgical care using modern minimally invasive approaches.

Mr El-Hasani maintains an active academic profile within upper gastrointestinal and bariatric surgery, having authored more than 200 peer-reviewed publications in the field. His extensive publication record reflects a sustained contribution to the advancement of minimally invasive, upper gastrointestinal and weight-loss surgery, reinforcing his recognised expertise and authority within these specialist areas.