Staff Leadership

Kellie Tremain, RN, MBA

President & Chief Executive Officer

Kellie Tremain has served as president and CEO of Indiana Donor Network since December 2012. She is the third CEO of Indiana Donor Network since it was formed in 1987. As CEO, Tremain champions the organization’s mission to save and enhance as many lives as possible through organ and tissue donation.

Tremain began her career at Indiana Donor Network in 2000 as a procurement transplant coordinator responsible for coordinating organ donation in Indiana hospitals, as well as working with Indiana transplant centers to recover organs out of state for Indiana patients. She transitioned into management in 2004, serving as manager of organ services with oversight of all staff responsible for coordinating organ donation. Two years later, she was appointed director of quality and tissue services, leading the quality, tissue and Vital Link (call center) departments.

Prior to joining Indiana Donor Network, Tremain worked at Riley Hospital for Children at Indiana University Health as a registered nurse in the pediatric intensive care unit. She earned a Bachelor of Science in Nursing from Indiana University and a Master of Business Administration from Indiana Wesleyan University. She is also a certified procurement transplant coordinator.

Steve Johnson, FACHE

Chief Operating Officer

Steve Johnson joined Indiana Donor Network as chief operating officer in January 2014. In this role, he is responsible for the operational success of the organization as well as partner transplant programs in the region. Johnson has more than 20 years of leadership experience in the air medical and critical care transport environment, something that has proven to be unique and valuable for Indiana Donor Network.

Johnson began his career in critical care transport as a pilot and a paramedic in New Mexico. He developed an air ambulance company which provided lifesaving care to the underserved areas of New Mexico and west Texas. He went on to serve as the vice president of business operations at Omniflight in Dallas, Texas, the second largest air medical transport provider in the nation, with more than 3,000 employees and 120 aircraft. Johnson was then recruited to help operations at Indiana University Health in Indianapolis, the state’s largest medical provider and only academic health center. There he served as the director of critical care transport, coordinating a network of air and ground critical care assets throughout Indiana. During his time at IU Health, Johnson became familiar with Indiana Donor Network. In his current role, Indiana Donor Network has seen significant growth and cost savings, in large part through the development of a 501(c)(3) dedicated to organ aviation needs.

Johnson also serves on the board of Donate Life Indiana, the state affiliate for Donate Life America. Donate Life Indiana is an alliance of agencies that exists to save and to enhance lives by registering organ and tissue donors through the Indiana donor registry.

Johnson has a B.A. from New Mexico State University as well as an MBA from Ashford University. He is a Fellow of the American College of Healthcare Executives and a recent recipient of the American College of Healthcare Executives Regent’s Award.

Michael A. Kraus, MD, FACP

Chief Medical Director

Dr. Kraus joined Indiana Donor Network in the role of chief medical director in April 2025. He also serves as Professor Emeritus at Indiana University following a distinguished 25-year career in academic medicine and nephrology leadership. After completing his nephrology fellowship at the University of Iowa, he joined Indiana University, where he led the Continuous Renal Replacement Therapy (CRRT) program for 20 years and served as Service Line Chief for IU Health Physicians Kidney Diseases, Clinical Chief of Nephrology at the Indiana University School of Medicine, and Chief Medical Officer of IU Health Adult Dialysis Services.

An internationally recognized expert in home hemodialysis and CRRT, Dr. Kraus is widely published and frequently invited to speak around the world. He has received numerous honors for his contributions to kidney care, including the Indianapolis Business Journal Healthcare Heroes Award, the National Kidney Foundation of Indiana Lifetime Achievement Award, and the Sagamore of the Wabash Award from the State of Indiana.

Following leadership roles with NxStage Medical and Fresenius Medical Care, Dr. Kraus now serves as Chief Medical Director at Indiana Donor Network, where he brings decades of clinical expertise and patient-centered leadership to advancing organ and tissue donation across Indiana.