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. 

Julian Haynes


Julian Haynes is a Visiting Practitioner at the Center for Public and Nonprofit Leadership and Partnerships and Strategy Director at the Meyer Foundation, where he focuses on the Foundation’s grantmaking in Prince George’s and Montgomery counties in Maryland. Before joining Meyer in 2016, Julian was an associate director of programs and policy at Achieving the Dream, a national reform network dedicated to community college student success and completion. In that role, Julian oversaw the day-to-day management of the Working Student Success Network, a national initiative focused on providing comprehensive nonacademic services to low-income community college students. Prior to his role with Achieving the Dream, Julian was a program associate on the education team at the Kresge Foundation, where for three years he helped manage a national portfolio of grants supporting efforts to increase post-secondary degree attainment for low-income students and students of color. Julian holds a bachelor’s degree from Morehouse College, and a master’s in nonprofit management from Milano The New School for Management and Urban Policy. 

Marlon Marshall


Marlon Marshall is the Nielsen Visiting Practitioner in Philanthropy at the Center for Public and Nonprofit Leadership. In this role, Marlon will co-teach with Dr. Kathy Kretman, Philanthorpy, Power and Politics, for master’s students in the McCourt School of Public Policy. Marlon brings a wealth of experience and passion for grassroots organizing to his current role as Partner at the City Fund, where he works with local leaders in cities across the country to create innovative public school systems. Marlon previously served as Special Assistant to President Obama and Principal Deputy Director in the White House Office of Public Engagement, where he helped lead the on-the-ground enrollment effort for the historic Affordable Care Act. He was also instrumental in helping the Administration launch the My Brother’s Keeper Community Challenge, a program that worked with cities and focused on making sure young people of color and all youth have a chance to succeed. In 2017, Marlon was a Fellow at the Georgetown Institute of Politics and Public Service, where he led weekly discussions with students committed to making politics work better. Marlon hails from St. Louis, Missouri has a B.G.S. from the University of Kansas and a MPM from Georgetown University.

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.

Tatiana Fredrick


Tatiana Fedrick is the 2021-2022 Eisenberg Public Interest Fellow at the Center for Public and Nonprofit Leadership. She is pursuing a Masters of Public Policy degree at McCourt with a focus on Social Policy. Tatiana is interested in inequities and racial disparities present in social policy and health systems. Tatiana previously studied at Colgate University where she received a B.A. in Sociology with a minor in Peace and Conflict Studies.

Maria Paredes


Maria Paredes is the Office Assistant at the Center for Public and Nonprofit Leadership. Maria is a junior in the School of Foreign Service majoring in International Politics with a focus on Foreign Policy and Policy Processing. She is extremely passionate about immigration policy and social justice reform and has interned in various legal and governmental institutions. This includes working as a Legal Assistant at the Houston firm, Johnson Law Group, and as a Communications Social Media Leader for Georgetown-Alumnus, Luisa Santos and her successful Miami-Dade School Board Campaign. On campus, Maria is involved in the Georgetown’s Scholars Program as an upperclassman mentor for incoming first year students. In addition, Maria is a member of the Justice and Diversity in Action, Living Learning Community (LLC) at Georgetown. There, she participates and upholds the principles of the LLC, which is to actively engage, learn, and educate oneself and others on important social issues within campus and the greater DMV area.

Priyanka Shingwekar


Priyanka Shingwekar is the Communications Assistant at the Center for Public and Nonprofit Leadership. Hailing from the Bay Area, California, Priyanka is a junior in the Georgetown College, majoring in Government with minors in Economics and Philosophy. She has previously worked as an intern for the International Trade Administration and the American Bar Association. On campus, Priyanka serves as leadership for Georgetown Model United Nations, Moot Court, and Guzaarish Dance Team. She also is involved with the Student Advocacy Organization and Undergraduate Law Review.