Our Leaders

Regenstrief Leadership

Peter J. Embí, MD, MS
President and CEO

Dr. Embí is an internationally recognized researcher, educator, and leader in the field of clinical and translational research informatics, with numerous peer-reviewed publications and presentations describing his innovations in the field. His areas of interest include biomedical informatics, health information technology, patient-centered outcomes and learning health systems. He is also the Associate Dean for Informatics and Health Services Research at the Indiana University School of Medicine, the Associate Director at Indiana CTSI and Vice President for Learning Health Systems at IU Health. He previously served in leadership roles at The Ohio State University. He was also on the faculty of the University of Cincinnati, where he was the founding director of the UC Center for Health Informatics.


Thane Peterson
Chief Operating Officer, VP for Finance and Administration
Thane Peterson provides leadership, management and vision to ensure the Institute has the proper structure, systems, and processes in place to effectively meet the mission and objectives of the organization and to ensure financial strength and operating efficiency. He works with faculty and clinicians to promote, expand and accelerate their research interests to include assistance with joint ventures, small business enterprise, intellectual property rights, and strategic partnerships.


Aaron Carroll, MD, MS
Vice President for Faculty Development
Dr. Carroll is Regenstrief’s first Vice President for Faculty Development. He is also a Professor and the Vice Chair for Health Outcomes Research Faculty Development in the Department of Pediatrics at Indiana University School of Medicine and Director of the Center for Pediatric and Adolescent Comparative Effectiveness Research and is the Associate Dean for Research Mentoring, both at the Indiana University School of Medicine.


Eneida A. Mendonca, MD, PhD
Vice President for Research Development
As the vice president for research development, Dr. Mendonca is charged with building upon and enhancing the successes of the institute’s faculty investigators across biomedical informatics, health services research, aging research and implementation science.
Eneida Mendonca, MD, PhD


Todd Saxton, PhD
Vice President for Business Development
Dr. Todd Saxton’s role is to guide new business models for bringing Regenstrief Institute healthcare innovations to market. He also fosters an entrepreneurial culture among the institute’s researchers and affiliates and connects the institute with Indiana University Kelley School of Business’ research and teaching expertise.


Sarah Wiehe, MD, MPH
Interim Director, Center for Health Services Research
Dr. Sarah Wiehe is a pediatrician and public health researcher. Her research focuses on how poverty, associated social determinants of health and context influence health-risk behaviors and outcomes for children, adolescents, and young adults. She leverages existing data to identify mechanisms and opportunities for intervention in order to improve health among vulnerable populations. She has held several leadership roles in the Indiana Clinical and Translational Sciences Institute.
Sarah Wiehe MD


Shaun Grannis, MD, MS
Director, Center for Biomedical Informatics
Dr. Grannis collaborates closely with national and international public and population health stakeholders to advance the technical infrastructure and data-sharing capabilities in varying settings. His research is focused on improving discovery and decision support in a variety of contexts by developing, testing, and implementing innovative approaches for data integration, patient matching, predictive modeling and other novel data science use cases, including developing novel population health data frameworks supporting fusion of community and social determinants of health with clinical data, as well as leveraging machine learning-based models to improve discovery and decision support in a variety of contexts. Dr. Grannis has been a part of Regenstrief Institute since 2001 when he began a National Library of Medicine sponsored medical informatics fellowship.


Susan E. Hickman, PHD
Director, Center for Aging Research
Dr. Susan Hickman Hickman is a clinical geropsychologist focused on optimizing the quality of life for older adults through improved decision-making and communication about treatment preferences. Much of her work is in advance care planning. She is nationally recognized for her work to help ensure that patients’ end-of-life treatment preferences are known and honored and is a founding member of the National POLST Paradigm. She has spent nearly two decades studying the model’s effects on end of life care, and her research findings are used across the country to support programs based on the POLST (Physician Orders for Life-Sustaining Treatment) model.
Susan E. HIckman, PhD


Regenstrief Board of Directors

President – Peter Embi, MD
Chairman – Craig Brater, MD
Secretary & Treasurer – Charlie Fox

Jay Hess, MD
Michelle Janney
Lisa Harris, MD
Anantha Shekhar, MD
John Kansky
Claire Fiddian-Green, MBA
Mark W. Geraci, MD
Wade Clapp, MD
Jennifer Sullivan, MD, MPH

Life Directors
Harvey Feigenbaum, MD
Len Betley
Jack Snyder