Joseph Barbato has been a consultant to nonprofit institutions since 1979.  His clients include:

• Alcoholism Council of Greater New York • American Academy in Berlin • The American College of Thessaloniki • American Diabetes Association • American Farmland Trust • American Rivers • American University of Beirut • Andre Agassi Foundation • Asbury Methodist Village • Association of American Universities • Baltimore Washington Medical Center • Bennington College • Big Brothers/Big Sisters of New York City • Boys and Girls Clubs of America • Calvary Hospital • The City College • City University of New York Graduate Center • Columbia University • Connecticut Center for Science and Exploration • The Conservation Fund • The Committee to Encourage Corporate Philanthropy • Doorways for Women and Families • Duke University • Environmental Defense • Fordham University • Fountain House • The George Washington University • Green Belt Movement International • Hartford Art School • Hole in the Wall Gang Camps • Inova Health System • International Bottled Water Association • Institute for the Advancement of Health • Land Trust Alliance • The Latin American Book Fair • Long Island College Hospital • Massachusetts Institute of Technology • The McLean House • Montefiore Hospital • National Alliance for Hispanic Health • National Forest Foundation • National Parks and Conservation Association • National Trust for Historic Preservation • The Nature Conservancy • NatureServe • The New York Book Fair • New York University • New York Weill Cornell Medical Center • Paget Foundation • Phoenix House • Polytechnic University • Rainforest Alliance • Resources for the Future • The River Conservancy • Safe Water Network • Smithsonian Institution • Special Olympics International • 2020 Global Initiative • Union of Concerned Scientists • United Nations Foundation • University of Maryland Medical Center • U.S. Department of State • US Fund for UNICEF • USLacrosse • Westport Country Playhouse • WETA