Who We Are

Kathy Postel Kretman, Ph.D.


Kathy Postel Kretman, Ph.D., is the Director of Georgetown University’s Center for Public and Nonprofit Leadership; Waldemar A. Nielsen Chair in Philanthropy; and Research Professor at the McCourt School of Public Policy. She has devoted most of her career to the development of leaders in the public, nonprofit and philanthropic sectors. One of the highlights of Dr. Kretman’s career has been directing Georgetown’s nationally recognized nonprofit executive certificate program, which now has more than 1,400 alumni across the globe. Additionally, she has directed customized leadership programs for organizations such as the USAID, the Qatar Foundation, United Way International, the International Monetary Fund, National Urban League, the National Hispana Leadership Institute and the Prosperity Now’s Racial Wealth Divide Initiative. Earlier in her career, Dr. Kretman advised chief executive officers on corporate social responsibility; researched community and economic development issues in New York City; and investigated discriminatory practices in employment, voting rights, and municipal service delivery for the U.S. Department of Justice’s Civil Rights Division. She holds a Ph.D. in Political Science from the University of Maryland, an M.A. in Public Administration from George Washington University, and a B.S. from the University of Texas at Austin. Click for more

Luisa Boyarski, Ph.D.


Luisa Boyarski, Ph.D. is the Associate Director of the Center for Public & Nonprofit Leadership. She is involved in developing and executing the Center’s many executive education and customized programs and representing the Center at Georgetown University and in the broader community. She recently researched and wrote Advancing Racial Equity Within Nonprofit Organizations. Dr. Boyarski frequently conducts workshops and gives keynote addresses on NGO Management and High Impact NGOs to international delegations, including trainings in China, Colombia, Hungary, Mongolia, Panama and Romania. She has also co-taught an undergraduate course on Philanthropy and Social Change. Prior to working at CPNL, she was the Executive Director of a D.C. based nonprofit working on global warming prevention with Arctic indigenous people. She currently leads a coalition of grassroots groups in Virginia, representing over 10,000 citizens. Dr. Boyarski received her Ph.D. in Comparative Government from Georgetown University, with a research focus on the role of nonprofit coalitions in public policy advocacy. Click for more

Hannah Hahn

Hannah Hahn


Hannah Hahn is a Visiting Practitioner at the Center for Public and Nonprofit Leadership and an active member of the DC philanthropic community.  She is currently the Program Officer for The Morris and Gwendolyn Cafritz Foundation focusing on Education, Children, Youth and Families.  Prior to joining Cafritz, Hannah was the Program Manager at The J. Willard and Alice S. Marriott Foundation, where she established its strategic investment priorities and oversaw grants of over $30 million. Hannah came to philanthropy after a decade of nonprofit management experience focused on economic development, women’s empowerment, education, and youth development. Hannah has worked and supported nonprofit programs in 23 countries in Africa, Asia, Eurasia and South America.  She was also the founding COO of Sustainable Health Enterprises (SHE), an award-winning social enterprise that reduces school absenteeism for Rwandan girls by manufacturing low-cost sanitary pads. In 2012, Hannah was recognized by The Society for International Development with the Andrew W. Rice Award for passion, commitment, creativity and impact in the international development field. She has a B.A. in International Development from McGill University and a M.Ed. in International Education Policy from The Harvard Graduate School of Education. 

Andreas Kern, Ph.D.


Andreas Kern is visiting Assistant Professor at the McCourt School of Public Policy. He teaches in the areas of international political economy and development economics. His research mainly concentrates on the political economy of macroeconomic and financial governance in developing and transition economies, and has been published in internationally renowned journals. Previously, Dr. Kern has been a Senior Research Fellow at the Jean Monnet Centre of Excellence for European Integration at Freie Universität Berlin. In this role, he has been engaged in various scientific and consultancy projects for the European Commission and the German government. Andreas Kern earned his Ph.D. in Political Economy from Freie Universität Berlin and holds an M. A. in economics from Ludwig Maximilians Universität in Munich.

Constanza Alarcón Cordón


Constanza Alarcón is the 2020-2021 Nielsen Philanthropy Research Assistant for the Center for Public and Nonprofit Leadership. She supports the Nielsen Chair of Philanthropy, Dr. Kretman, in her ongoing research and work surrounding public policy, philanthropy, and nonprofit leadership. Constanza is pursuing her MIDP at the McCourt School of Public Policy, focusing on the importance of democracy building and the rule of law for international development. Prior to this, Constanza served for five years as the Programs Director for a Guatemalan nonprofit focused on institutional strengthening, advocacy and technological development. She has also consulted for Guatemala’s Ministry of Economy, acted as a Political Contributor for national news outlets, as well as interned for the American Bar Association’s Rule of Law Initiative. She holds a B.A. in Political Science and English Literature from Grinnell College. 

Victoria Owens


Victoria Owens is the 2020-2021 Eisenberg Public Interest Fellow for the Center for Public and Nonprofit Leadership. Through the fellowship, she supports the McCourt School of Public Policy by researching anti-racism initiatives in post-secondary institutions and aiding McCourt in strengthening their diversity, equity, and inclusion initiatives. Victoria is pursuing a Masters of Public Policy at the McCourt School, focusing on research methods and quantitative policy analysis. Her policy interests lie with the intersection of inequality and social, environmental, and health policy. She is also currently working with local activists in her hometown to reform curriculums and diversity, equity, and inclusion practices within the local school system. Victoria previously studied at the University of Maryland, College Park, where she received a dual degree with a B.A. in Government and Politics, a B.S. in Psychology, and a Neuroscience minor.

Escadar Alemayehu


Escadar Alemayehu is the Communications Assistant at the Center for Public and Nonprofit Leadership. She is a junior in the School of Nursing and Health Studies majoring in Global Health and minoring in Spanish and Women’s and Gender Studies. Escadar is from Denver, Colorado where she interned with her local public health department. On campus, Escadar works with Georgetown Opportunities for Leadership Development, and serves as a board member for Georgetown’s Admission Ambassador Program. She also serves as a tour guide, and is a student representative to the University’s Board of Directors.

Natalie Isé


Natalie Isé is the Office Assistant at the Center for Public and Nonprofit Leadership. Natalie is a Junior in the School of Foreign Service majoring in International Politics (International Security concentration) and minoring in Italian. She has also interned with the Guardian ad Litem Program in Florida’s 13th Circuit Court. On campus, Natalie serves as a board member for the Center for Social Justice’s Advisory Board for Student Organizations (CSJ ABSO) working with organizations that advance educational equity in the DC area. She also serves as a committee member for the Center for Multicultural Equity and Access’s Hoya Saxa Weekend Planning Committee, where she coordinates the annual “Diaspora” multicultural performing arts showcase.