De Gagne studied in nursing at Ewha Womans University in South Korea and earned two master's degrees in health psychology and nursing education in the States. She received her PhD from Northcentral University in education with emphasis on education technology management. She also obtained a post-graduate certificate in health informatics in 2012 and a DNP in May 2014 at Duke University. She is board certified in Nursing Professional Development by the American Nurses Credentialing Center and earned certification as a nurse educator from the National League for Nursing.
De Gagne is a registered nurse with more than 25 years of experience including acute care, long-term care, case management, staff development, administration and nursing education both in South Korea and the U.S. De Gagne’s scholarship focuses on global nursing education with an emphasis on cybercivility and educational technology management. As a 2015-2017 fellow of Duke University School of Nursing's Institute for Education Excellence Teaching Fellowship Program, she is currently conducting studies on promoting cybercivility and preventing cyberincivility among health professions students and faculty across the curriculum, policies and guidelines.
De Gagne holds numerous membership and leadership roles in professional organizations, including the International Council of Nursing, American Nurses Association, Global Korean Nursing Foundation and North Carolina League for Nursing. She is the founder and executive advisor of the North Carolina Korean Nurses Association, sits as an editorial board member for the Athens Journal of Health and serves the Sigma Theta Tau International Honor Society of Nursing as a global ambassador and an abstract reviewer. She has been the recipient of scholarships and awards throughout her professional and academic tenure, being interviewed nationally and internationally for print and the web.