Stephen Wonderlich, PhD, is the Chester Fritz Distinguished Professor, University of North Dakota School of Medicine & Health Sciences. He serves as Vice-President and Chief of Behavioral Health Research at Sanford Research. He has published widely in the literature.

He currently sits on the Editorial Board for several professional journals, is a Past-President of the Academy for Eating Disorders and was a member of the Eating Disorder Workgroup for DSM-5. He serves, or has served, on the Board of Directors for several eating disorder organisations, including the Eating Disorder Research Society, Academy for Eating Disorders, Eating Disorder Coalition, and the National Eating Disorder Association. He also serves as the Principal Investigator for the NIH Supported Center of Biomedical Research Excellence in Eating Disorders at Sanford Health.