OPTN Regions of the United States (IMAGE) University of Kansas Caption The US Department of Health and Human Services oversees 11 regions as part of the nation's organ donation system. Credit University of Kansas News Service Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.