Faculty Profile

Katie Lynne O Sullivan
Section of Endocrinology, Diabetes and Metabolism
Assistant Professor of Medicine
Referring Physician Access Line: 1-877-DOM-2730

Academic Interests

Dr. O'Sullivan is a combined adult and pediatric endocrinologist whose clinical and research interests focus on preventing and managing obesity and type 2 diabetes in children and as well as improving the transition of adolescents with endocrine conditions from pediatric to adult healthcare providers. Her prior research investigated the relationship between sleep deprivation in adolescents and cardiovascular outcomes including abnormalities of glucose and insulin homeostasis. In addition, she examined the incidence of obstructive sleep apnea in adolescents with type 2 diabetes.

Clinical Interests



For a complete list of publications click here:


  • MD, 2009, Loyola University Stritch School of Medicine, Medicine
  • Residency, 2013, University of California, San Diego, Medicine and Pediatrics
  • Fellowship, 2017, University of Chicago, Adult and Pediatric Endocrinology