If a child's digestive system, liver, or nutritional problems need to be seen by a specialist doctor, it is the pediatric gastroenterologist you must meet.

Pediatric gastroenterology is a sub speciality of pediatrics, and Pediatric gastroenterologists are trained to perform diagnostic tests of a child’s digestive system. Special instruments, such as endoscopes, are used to examine the inside of the digestive tract or obtain tissue samples (biopsies). 

Endoscopic procedures pediatric gastroenterologists perform include esophagogastroduodenoscopy and colonoscopy. 

Pediatric gastroenterologists also treat bleeding, swallowing problems, or other problems encountered in the intestines. They have extensive expertise in managing nutritional problems in children, including placement and management of feeding tubes and intravenous nutrition and diagnosing and treating infants, children, and teens with liver disease.