Digestive tract specialists diagnose and treat diseases of the digestive tract (oesophagus, stomach and intestines), liver, biliary tract and pancreas using techniques such as digestive endoscopy (gastroscopy, colonoscopy, echoendoscopy, capsule endoscopy and ERCP), digestive ultrasound, and functional tests of the digestive tract (manometry, pH-metry). Their work is carried out in consultations (often specialising in a particular area), hospitalisation, and the Endoscopy Unit.

The pathologies treated include eosinophilic oesophagitis, gastro-oesophageal reflux disease (GERD), hiatal hernia, Barrett's oesophagus, gastritis, ulcers and diseases associated with Helicobacter pylori, coeliac disease, polyps and tumours of the digestive tract, Crohn's disease and ulcerative colitis, diverticulosis, functional problems of the digestive tract, hepatitis and cirrhosis, gallstones, pancreatitis and pancreatic cysts.

The service is led by the Head of Service, Dr Prof. Porres Cubero, 3 associate heads, and 31 attending physicians, along with 8 residents, specialised nursing personnel, assistants and administrative staff.