Darren Stewart, Principal Research Scientist with the United Network for Organ Sharing (UNOS), has a passion for answering hard questions and solving real-world problems in healthcare through the use of both elementary and advanced analytical methods. He earned a master's degree in statistics from North Carolina State University in 1998 and currently has over 20 years of experience as an applied statistician, the past 11 in organ transplantation and previously in the banking and aerospace industries. He has worked extensively on behalf of the OPTN Kidney Transplantation and Operations & Safety committees, and his current research interests include optimizing deceased donor kidney utilization; identifying ways to improve the organ allocation system; measuring equity in organ allocation; and applying behavioral science to aid transplant clinician decision-making as a principal investigator under the new "UNOS Labs" initiative. Mr. Stewart is the author of several publications in high profile transplant journals and he has presented findings from numerous studies at transplant conferences. He hails from central Connecticut and now lives on 3 acres with his animal-loving family in Coatesville, Pennsylvania.

Aparna Sadavarte, Registry Analytics Lead at United Network for Organ Sharing (UNOS), is an avid data enthusiast with a strong background in SAS, R and Python. At UNOS, she leads a team that supports analytics for international and national organ transplant registries. Prior to UNOS she worked at Capital One and Virginia State Police. She has a master's degree in Electrical Engineering from Southern Illinois University. She lives in Richmond, VA with her husband and two kids.