Gastroenterologist, Interventional Endoscopist, Melbourne Gastroenterology, Victoria Gastroenterology
Dr Marios Efthymiou is a Gastroenterologist and Interventional Endoscopist, passionate about providing excellent medical care to his patients.

He works at the Austin Hospital in his role as the Deputy Head of Endoscopy. His expertise lies in general gastroenterology and all aspects of advanced interventional endoscopy including gastroscopy, colonoscopy, ERCP, endoscopic ultrasound (EUS), capsule endoscopy, balloon enteroscopy and endoscopic mucosal resection.

Dr Efthymiou provides consultation services through his rooms at John Fawkner Hospital and performs procedures at Epworth Hospital (Richmond), John Fawkner Hospital (Coburg) and also the Austin Hospital (Heidelberg).



Non-procedural expertise:

  • Colon cancer screening

  • Management of difficult polyps


  • Reflux

  • Barrett’s oesophagus

  • Swallowing disorders

  • Gastritis

  • Difficult to treat Helicobacter Pylori


  • Irritable bowel syndrome

  • Food intolerances

  • Coeliac disease

  • Inflammatory bowel disease


  • Obscure gastrointestinal bleeding

  • Anaemia


  • Abnormal liver function tests

  • Fatty liver

  • Hepatitis

  • Bile duct stones

  • Jaundice


  • Sphincter of Oddi dysfunction

  • Pancreatitis

  • Pancreas Divisum

  • Chronic Pancreatitis

  • Pancreas duct stones


Procedural expertise:

  • Gastroscopy and Colonoscopy

  • ERCP for treating bile duct stones and obstructive jaundice

  • Endoscopic ultrasound (EUS) for staging tumours in the gastrointestinal tract, assessing submucosal lesions, diagnosing bile duct stones and investigating patients with pancreatitis

  • Endoscopic mucosal resection for large polyps and early mucosal cancers

  • Endoscopic treatment of oesophageal pouches and achalasia

  • Capsule endoscopy for identifying causes of small bowel bleeding

  • Single and double balloon enteroscopy for treating small bowel bleeding