Olger C. Twyner, III, Executive Director

Phone: 212-854-1472 | Email: oct4@columbia.edu

Olger C. Twyner, III, is currently the Executive Director of Community Impact at Columbia University.  He graduated summa cum laude from Jackson State University and holds a J.D. and M.B.A. from The Ohio State University College of Law and Columbia Business School, respectively.  Twyner was the first African American to serve as a federal judicial clerk in Mississippi. In the field of public interest law, he practiced law with Southeast Mississippi Legal Services, served as coordinator of the NYU Public Interest Law Center, and worked as Development Director for the Mississippi Center for Justice.  Additionally, he has held executive roles at Xavier University of Louisiana and Row New York. Twyner is uniquely positioned to strengthen collaboration between Columbia and the surrounding communities, as he is a Columbia alumnus, was the founding director of the Columbia Business School Community Collaboration, and is former Executive Director and President of Double Discovery Center (DDC).  He is an active member of the Jackson State University National Alumni Association, an avid New York Yankees fan, and enjoys cooking and international travel.  

Sandy Helling, Senior Associate Director 

Phone: 212-854-9621 | Email: sh18@columbia.edu

Sandy Helling has key responsibilities in the over-all operation of Community Impact in the areas of fundraising, program development and management, special events, and community partners. She has directed emergency service and adult education programs at Community Impact since 1989.  She developed Community Impact’s Jobs and Education Empowerment Project (J.E.E.P.), a network of adult education and workforce development programs. Prior to joining Community Impact, Sandy was the Director of the Welfare Grant Increase Coalition, and a Client Apprentice Coordinator for the Community Council of Greater New York.  She holds a Bachelor of Arts from New College, a Masters of Education and a Masters of Arts in Philosophy and Social Sciences from Teachers College, Columbia University.


Marleny AbreuDevelopment Assistant

Phone: 212-854-2611 | Email: ma3964@columbia.edu 


Ricardo BustamanteSenior Program Coordinator

Phone: 212-854-6310 | Email: rab2232@columbia.edu 


Christina Gorman, Administrative Assistant to the Executive Director

Phone: 212-854-0734 | Email: cg3134@columbia.edu


Margaret Goslin, Department Administrator

Phone: 212-854-0731 | Email: mg4042@columbia.edu


Cait Hughes, Program Manager: Youth and Other Projects

Phone: 212-854-2610 | Email: cmh2254@columbia.edu 


Kent Katner, ESOL Program Manager  

Phone: 212-854-2612 | Email: kk3171@columbia.edu


Clayuri Parrilla, Program and Evaluations Manager

Phone: 212-854-9622 | Email: cp2415@columbia.edu


Sharon Rios, TASC Program Manager  

Phone: 212-854-0732 | Email: sr3673@columbia.edu


Jeffrey Zeiler, Education for Success Program Coordinator

Phone: 212-854-9615 | Email: jz2208@columbia.edu