A gastroenterologist is a medical doctor who specializes in diagnosing and treating disorders of the digestive system. This includes organs such as the esophagus, stomach, intestines, liver, and pancreas. They often perform procedures like endoscopies to examine the digestive tract and can help manage conditions like acid reflux, irritable bowel syndrome, and liver disease. These specialists typically complete several years of training after medical school, including a residency in internal medicine and a fellowship in gastroenterology. Patients may be referred to a gastroenterologist for symptoms like abdominal pain, persistent nausea, or changes in bowel habits, ensuring they receive expert care for their digestive health.