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.