A Medical Gastroenterologist treats digestive system problems, including inflammatory bowel disease (IBD), liver diseases, functional bowel issues (like IBS), and nutritional disorders. They also perform diagnostic and therapeutic endoscopy to detect and treat stomach, intestine, and liver-related conditions.

Advanced endoscopy includes specialized procedures like EUS (Endoscopic Ultrasound) and third-space endoscopy, which allow doctors to examine and treat deeper or more complex digestive problems. These techniques help diagnose tumors, remove early cancers, and treat blockages or bleeding without major surgery.