Zahoor A. Makhdoom,MD.,MRCP,AGAF,FASGE
Board Certified Gastroenterolog/Hepatology

Office: (618)549-8006  Fax: (618)549-8434


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What is Gastroenterology?

Gastroenterology is the study of the digestive system. The digestive system includes the gastrointestinal tract, which starts in the mouth and extends through the stomach, the small intestine, the large intestine (colon), the liver, the pancreas and the gallbladder.

A gastroenterologist is a person who specializes in the field of gastroenterology and treats diseases of the digestive system. Procedures commonly performed by a gastroenterologist include upper endoscopies and colonoscopies.

Digestive Disorders

Below is a list of common digestive disorders. Clicking on any of them will give you basic information about each disorder. For more information on any of these or other GI topics, please refer to our page of helpful GI links.

Patient Bill of Rights (Download)