Liz Madigan, PhD, RN, FAAN, is the Chief Executive Officer of Sigma Theta Tau International Honor Society of Nursing (Sigma). She assumed the position in November 2017 following a 21 year period as a tenured professor at the Frances Payne Bolton School of Nursing, Case Western Reserve University, Cleveland Ohio.  Her clinical background and her program of research focused on home health care. She has been funded by the National Institutes of Health and private foundations for her research. She is widely published in the area. During her time at Case Western she led the global health initiatives for the school of nursing and has provided consultation in multiple countries for home care and aging care in the community. She is a graduate of Wright State University, Dayton Ohio (BSN), The Ohio State University (MS in nursing) and Case Western Reserve (PhD), a fellow in the American Academy of Nursing and proud member of Sigma Theta Tau.

Since assuming the position as Chief Executive Officer, she had led initiatives in strengthening the scholarship offerings from Sigma, raised funds for new research grants in conjunction with partner organizations, and obtained funding to support nursing students in accelerated baccalaureate and doctor of nursing practice programs. Sigma continues to work with universities around the world to develop chapters with recent changes to simplify the chapter development process. The two scholarly journals, Journal of Nursing Scholarship and Worldviews on Evidence Based Nursing are ranked in the top ten in impact factor among all nursing journals worldwide. The online continuing nursing education/continuing professional development program offers more than 100 contact hours of programming for Sigma members.