Pediatric Endocrinologist A pediatric endocrinologist is a doctor who specializes in the diagnosis and treatment of children with diseases of the endocrine system, such as diabetes and growth disorders. The glands of the endocrine system produce hormones, which are chemical substances that regulate many important body functions. Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.