Dr. Hainline received his MD and PhD degrees at Duke University, North Carolina. Dr. Hainline completed his pediatric internship and residency at the St. Louis Children's Hospital, St. Louis, Missouri. He underwent fellowship training in clinical, biochemical and molecular genetics at Washington University School of Medicine. He is board certified by the American Board of Pediatrics, and the American Board of Medical Genetics, with certification in Clinical Genetics, and Biochemical/Molecular Genetics.
He is a member of several professional societies including the American Association for the Advancement of Science, American Society of Human Genetics, American College of Medical Genetics, Founding Fellow, Society for the Study of Inborn Errors of Metabolism, American Academy of Pediatrics, American Medical Association, Indiana State Medical Association, Indianapolis Medical Society and on the clinical advisory board of the Prader-Willi Syndrome Association (USA). He serves on several advisory committees for the Indiana State Board of Health concerning Newborn screening and clinical genetics.