Skip to main content
The Betty Irene Moore School of Nursing

The Betty Irene Moore School of Nursing

Mary Lou de Leon Siantz, Ph.D., R.N., F.A.A.N.


Mary Lou de Leon Siantz is a professor at the Betty Irene Moore School of Nursing at UC Davis.  She is nationally recognized for her interdisciplinary efforts to prepare health professionals for leadership and policy, and internationally respected for her research in migrant health.

As a professor at the School of Nursing, de Leon Siantz teaches, conducts research and mentors students in leadership policy and population health. Her research most recently focused on the impact of migration on the health and development of Hispanic migrant/immigrant children and families. Her current research, funded through the Office of Minority Health Department of Health and Human Services, focuses on the development of educational strengths of Hispanic immigrant adolescents and the promotion of their reproductive awareness.

In 2013, de Leon Siantz was appointed director of the Center for the Advancement of Multicultural Perspectives on Science (CAMPOS), which is a research center to attract women and Latina scholars to UC Davis. She is also the associate director of the Community Engagement and Research Program of the UC Davis Clinical and Translational Science Center. This program connects health researchers with communities of all kinds to ensure discoveries are translated into real-world interventions. She is an affiliated faculty member with the Migration and Health Research Center, collaboration between the UC Davis and UC Berkeley campuses that is dedicated to conducting research to improve the health of migrant populations in California and around the globe.

Prior to her arrival at the Betty Irene Moore School of Nursing, de Leon Siantz was the assistant dean of Diversity and Cultural Affairs at the University of Pennsylvania School of Nursing, where she collaborated with other faculty to develop an interprofessional development program as well as a multicultural and global health minor that included a focus on national and international migration. 

She earned a Doctor of Philosophy in Human Development from the University of Maryland College Park with a minor in bioethics. She earned a Master of Nursing in Child Adolescent Psychiatric Nursing/Community Mental Health from UCLA and a Bachelor of Science in Nursing from Mount St. Mary’s College in Los Angeles.

De Leon Siantz’s academic awards and honors include the Joseph P. Kennedy Jr. Fellowship in Bioethics at Georgetown University, a Robert Wood Johnson Executive Nurse Fellowship, and recognition as a Top Latina in Health and Science, by “Hispanic” magazine. She is a Fellow in the American Academy of Nursing and an expert panel member for the National Academy of Science Institute of Medicine, Health of Immigrant Children and Immigrant Children’s Health.

She was most recently published in Global Advances in Health and Medicine, Journal of Family Nursing, International Encyclopedia of Immigrant Health, the Kaohsiung Journal of Medical Sciences, the Journal of Professional Nursing and Minority Nurse.

Contact information: Phone: (916) 734-7488 Email: MaryLou.Siantz@ucdmc.ucdavis.edu