Dr. Joni Lynn Hamilton, MD is a health care provider primarily located in Lake In The Hills, IL, with other offices in Barrington, IL and Algonquin, IL (and 4 other locations). She has 25 years of experience. Her specialties include Adolescent Medicine, Endocrinology, Diabetes & Metabolism, Pediatrics, Pediatric Endocrinology. Dr. Hamilton is affiliated with Saint Alexius Medical Center. She speaks English.