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Senior Staff

Diana Aviv
President and CEO


Diana Aviv is president and CEO of Independent Sector, the national leadership network for America’s nonprofits, foundations, and corporate giving programs. By representing tens of thousands of organizations across the country, Independent Sector advances the common good by leading, strengthening, and mobilizing the charitable community.

Diana is a frequent speaker on trends in and key issues for the sector. She has testified before Congress and has been featured in media outlets such as The New York Times, The Washington Post, The Wall Street Journal, NPR, and MSNBC.com.

Diana also served as executive director of the Panel on the Nonprofit Sector, convened by Independent Sector at the encouragement of the leadership of the Senate Finance Committee. This independent panel recommended actions to strengthen the governance, transparency, and accountability of public charities and private foundations, many of which were enacted into law. The Panel also issued the Principles for Good Governance and Ethical Practice: A Guide for Charities and Foundations. More than 150,000 have been distributed to members of the nonprofit community.

Diana came to Independent Sector in 2003 after spending nine years at the Jewish Federations of North America as their vice president for public policy and director of its Washington Action Office. Diana focused on federal legislation and regulations, particularly policies affecting health and human service organizations.

Diana was formerly associate executive vice chair at the Jewish Council of Public Affairs, director of programs for the National Council of Jewish Women, and director of a comprehensive program to serve battered women and their families. She had a private psychotherapy practice in New York and New Jersey and has served as an expert witness in capital cases in New Jersey.

In December 2010, President Obama appointed Diana to the White House Council for Community Solutions that mobilizes citizens, nonprofits, businesses, and government to solve community needs. A founding board member of the Outcomes and Effective Practices Portal, Diana serves on the board of governors of the Partnership for Public Service and the National Commission on Civic Investment in Public Education, as well as on the board of directors for the Southern Africa Legal Services Foundation. She is a member of the advisory boards of the Comptroller General’s at the Government Accountability Office, the Peter G. Peterson Foundation, the International Center for Not-for-Profit Law, and the Centers on the Public Service of George Mason University.

She was previously a member of the Smithsonian Institution’s Board of Regents’ Committee on Governance, the board of directors for GuideStar and the National Council on Aging, and the advisory board for the National Center on Philanthropy and the Law. A native of South Africa, Diana graduated with a B.S.W. from the University of Witwatersrand in Johannesburg and received a master’s degree in social work at Columbia University. 



Cynthia Dodd Adcock
Vice President, Communications and Marketing

Cynthia Dodd Adcock is vice president of communications and marketing at Independent Sector. She leads Independent Sector’s efforts to amplify and shape the vital voices of the nonprofit and philanthropic sector through messages and stories that convince diverse audiences to work with IS to advance our shared mission of a just and inclusive society. 

Cynthia has extensive public affairs and communications experience and more than 25 years leading communications and marketing efforts for national nonprofit organizations including the National Council of State Housing Agencies and most recently the National Housing Conference. She has held senior positions in public affairs at the National Association of Home Builders and Fannie Mae’s affordable housing division, and was director of public affairs for the Alabama Education Association. 

Cynthia was a writer producer for WAFF-TV, an NBC affiliate in Huntsville, AL. She has a B.A. in Public Relations from Auburn University and is a native of Alabama.



Amanda Broun
Vice President, Programs and Practice

Amanda Broun is the vice president of programs and practice at Independent Sector. In her role, Amanda leads efforts to strengthen leadership, accountability, and effectiveness in nonprofit organizations of all sizes and missions. Amanda has years of experience supporting nonprofits through policy, program, and capacity building, most recently at Public Education Network (PEN), a network of community-based public education advocacy organizations. Prior to PEN she served as Chief Education Counsel to the U.S. Senate Committee on Labor and Human Resources.  As counsel for the U.S. Senate Committee on Labor and Human Resources, Amanda drafted legislation and committee reports, including the Elementary and Secondary Education Act.  She frequently represented Committee Chairman, Senator Edward M. Kennedy, in negotiations with staff from all branches of government. 

Prior to working on the Hill, she was legislative counsel in the Intergovernmental Affairs Office of the NYC Office of Management and Budget, where she did extensive writing and analysis of the fiscal impact of proposed state legislation.  She also was a staff attorney in the Office of the General Counsel of the NYC Board of Education. 

Amanda received a law degree from New York University School of Law and a bachelor’s in sociology from Barnard College, Columbia University. 



MichaelGoff
Michael Goff
Senior Vice President and Chief Development Officer

Michael Goff is the senior vice president and chief development officer at Independent Sector. Michael has more than 25 years of senior executive experience including development, communications, and a long-standing interest in government, public policy, and nonprofit institutions. Michael served for 21 years as the vice president for development and college relations at Loyola College in Maryland. During his tenure, he led five major capital campaigns, raising over $200 million in annual and capital support for the university. Michael also managed external relations, community relations, and media relations. Previously he served as director of planning and development at The Gilman School, also in Baltimore, from 1982 to 1987, and was director of advancement and special assistant to the president at Mount Aloysius College in Cresson, Pennsylvania, from 1977 to 1979.

Michael earned a Ph.D. in Government at Georgetown University in 2002, specializing in American Politics, Public Policy, and Political Theory. He also holds an M.A. in Political Science from the University of Pennsylvania and a B.A. in Political Science from Saint Joseph’s University. His research in the area of fundraising during the early stage of the presidential nomination process was published in 2004 in his book The Money Primary: The New Politics of the Early Presidential Nomination Process.

Erica Greeley Erica Greeley
Vice President, Networks and Member Engagement

Erica Greeley leads Independent Sector’s efforts to expand and engage its diverse network. Erica’s role includes strengthening IS’s current membership, while investigating how people, organizations, and networks can best work together in today’s dynamic environment. Erica joined IS in 2007 as Director, Strategic Initiatives.

Prior to IS, Erica served the National Council of Nonprofit Associations (now the National Council of Nonprofits) as Director of Strategic Policy Planning and then Deputy Director. In that capacity, she oversaw an initiative that convened over 100 town hall meetings across the US to discuss the needs of local nonprofits. Her 18-years in the nonprofit and philanthropic sector also includes managing fundraising and marketing campaigns, evaluating community-building initiatives, chairing local grant-making committees, and directing after-school programs for at-risk youth.

Erica is an adjunct faculty member of Georgetown University’s Nonprofit Management Executive Certificate Program and serves on the board of Microfinance Opportunities. She holds a B.A. from Wesleyan University and an MPP from the Public Policy Institute at Georgetown University.

Nadine Jalandoni
Vice President, Research, Evaluation and Special Projects

Nadine Jalandoni is vice president for research, evaluation and special projects at Independent Sector. Her responsibilities include providing research support to departments across the organization; promoting organizational effectiveness; contributing to strategic planning; and developing and managing the program content for the IS Annual Conference. She has been with IS since 1999 and worked on IS’s Giving and Volunteering series, in addition to co-authoring two key nonprofit resource publications, The Nonprofit Almanac, and Social Justice Grantmaking.

Nadine serves on various nonprofit research advisory committees and is responsible for calculating the annual dollar value of volunteer time. She has been involved in managing the IS international program and represented IS at the CIVICUS Global Assemblies. During this time she also co-chaired the Steering Committee of the Affinity Group of National Associations (AGNA). Prior to Independent Sector, Nadine worked as associate executive director for a major corporate foundation in the Philippines, as research manager for the United Way of Southeastern PA, and other research positions with nonprofits and consultancy firms. She holds a B.S. in foreign service from Georgetown University and an M.A. in international development from American University.

Terri O'Brien
Chief Operating Officer

Terri O'Brien works to ensure that Independent Sector’s infrastructure and financial plans cohesively support the strategic direction and advance the mission of the organization. Terri oversees accounting, finance, human resources, and administration and brings her finance and business expertise to the CEO and senior leadership team. Prior to joining Independent Sector in April 2010, Terri worked six years as the CFO and vice President of finance and administration development at BoardSource, where she played a key role in developing and implementing two strategic plans and aligning people, processes, and financial resources.

For 15 years, Terri held a variety of roles at World Wildlife Fund, the most recent of which was the director of financial operations where she led smart business practices for the home office and 16 field offices and integrated multi-year program strategies and plans with budgeting. Terri also held positions at Miles & Stockbridge and the consulting firm of Yaffe & Offutt, both in Baltimore. She has volunteered on a number of school financial committees and currently serves as a trustee for Thomas Benjamin Combs Trust.

Terri graduated from Towson University, where she majored in communications with a concentration in journalism. She passed the Certified Public Accountant exam in 1995.




Geoffrey Plague
Vice President, Public Policy

Geoffrey Plague leads Independent Sector’s efforts to advance policies that enhance the ability of charitable and philanthropic organizations to improve lives across the country and around the world. Before becoming vice president, Geoff served as Independent Sector’s director of government relations for more than two years, working on the development of policy objectives and the implementation of an advocacy campaign focused on the tax treatment of nonprofit organizations and charitable giving. 

Prior to joining IS, Geoff served as advocacy and policy director at the Basic Education Coalition, a group of international development organizations dedicated to providing every child around the world access to a quality education. 

Geoff served nearly 15 years in the United States Congress, and the New York Times in August 2008 called him “a well-respected Capitol Hill veteran.” He held senior positions in the offices of Senator Byron Dorgan (D-ND) and Representatives Steny Hoyer (D-MD) and Robert Andrews (D-NJ). 

Geoff received an MA in International Affairs from American University’s School of International Service and a BA in Political Science from the University of Kansas. He has taught courses on the U.S. Congress at Georgetown University and St. Mary’s College of Maryland.

Geoff is also the founder and president of Buildings & Books, a 501(c)(3) public charity that constructs children's community libraries in sub-Saharan Africa.





Claire S. Wellington
Senior Vice President, Governance and Special Projects

Claire Wellington joined IS in November 2004, and now leads the organization's efforts to bring together theorists, researchers, and practitioners to identify the emerging trends in the nonprofit sector. She was most recently vice president and general counsel to the American Association of Exporters and Importers, where she provided legal and policy advice and prepared reports on a range of regulatory and legislative matters. Prior to AAEI, Claire was chief of staff and senior advisor of the enforcement division at the U.S. Department of the Treasury, where her work included anti-corruption efforts and sanctions policy.

Claire received a bachelor's degree in government from Smith College, a master's degree in international affairs from Columbia University, and a law degree from Harvard Law School. She is a member of the Minority Outreach Advisory Board of the National Center for Missing and Exploited Children and co-author of “The Foreign Corrupt Practices Act: Avoiding the Pitfalls,” published in the Preventive Law Reporter. Among other accomplishments, she received the Treasury Department's Secretary's Honor Award in 2001.


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