Mr Ioannis Gerogiannis


General Surgery

Consultant General and Emergency Surgeon

Professional background

Mr Ioannis Gerogiannis is a Consultant General and Emergency Surgeon, with a special interest in Laparoscopic Upper Gastrointestinal (GI) and Bariatric surgery. He is also an Honorary Consultant Surgeon at Oxford University Hospitals and St George’s University Hospital. Mr Gerogiannis became an Accredited JAG Upper GI Endoscopist in 2017.

Mr Gerogiannis graduated from the Medical School of University of Crete, Greece, where he trained in Surgical Intensive and Critical Care, before serving the Hellenic Army as a military doctor.

After finishing his specialty training in Greece, he moved to the UK for subspecialty training in Upper GI Surgery and worked as a Senior Clinical Fellow in UGI Surgery at the Countess of Chester Hospital before moving to Oxford to undertake a Fellowship in Bariatric and Oesophagogastric Surgery at Oxford University Hospitals NHS Foundation Trust.

He is the Educational and Clinical Supervisor of Kingston Hospital’s Surgical Trainees and recently he became a Member of the Educational Committee of the European Society of Trauma & Emergency Surgery (ESTES).

Clinical interests and procedures

  • Laparoscopic Surgery of the Upper GI System
  • Emergency and elective cholecystectomy
  • Common bile duct exploration
  • Gastrectomy
  • Hernia repair
  • Anti-reflux surgery
  • Obesity Surgery: Sleeve gastrectomy, gastric bypass, intragastric balloon, removal of gastric band


Professional memberships

Royal College of Surgeons of England, American College of Surgeons, Faculty of the Surgical Trainers of RCS of Edinburgh, European Society of Trauma and Emergency Surgery (ESTES), International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO), Association of Upper Gastrointestinal Surgeons of Great Britain and Ireland, British Obesity & Metabolic Surgery Society, Swiss ATLS Faculty Team, European Resuscitation Council, National Association of Emergency Medical Technicians, Hellenic Surgical Society, Hellenic Society of Prehospital Care