About Us

Who We Are


Executive Director

As Executive Director of the New England Anti-Vivisection Society (NEAVS), Nathan Herschler brings his long-standing commitment and expertise in animal protection, program design, and strategic planning to NEAVS.  Nathan received his Bachelor of Arts degree in 2005 from Wheaton College and his Juris Doctorate in 2008 from the American University, Washington College of Law. He is also a 2013 graduate of the International Program for Development Evaluation Training. Nathan began…

Board of Directors


Gina Weishaupt is an executive consultant and coach specializing in motivational training, goal setting, and facilitating positive change in the workplace. As a Sales & Marketing Consultant, she works with clients to develop innovative marketing strategies to drive positive results, and maximize the strengths of the organization. Gina brings over 20 years of media sales, marketing, and businesses development experience to NEAVS' Board. This includes serving as Director of Marketing…

President Emeritus

Theodora Capaldo, EdD, is a Massachusetts-licensed psychologist. She has taught psychology at the college level, served as director of counseling at a liberal arts college, and has maintained a private psychotherapy practice for over 30 years. Dr. Capaldo is President Emeritus of the New England Anti-Vivisection Society, its educational affiliate, the Ethical Science Education Coalition (ESEC), and spearheaded NEAVS’ national campaign Project R&R: Release and Restitution for Chimpanzees in U.S.…


Betsy Swart, MSW, PhD is a licensed Social Worker and Sociologist who has worked in the animal protection movement since the 1980s, serving as program director for national and international animal protection organizations. Since 1999, she has been the Executive Director of the Amboseli Trust for Elephants, the longest running study of wild elephants in the world. The Trust works to protect 1,500 elephants in Amboseli National Park, Kenya. She completed…


Karen Allen is Director of Development for the Solar Electric Light Fund (SELF), a nonprofit organization that designs and implements solar energy solutions for those living in remote, rural villages in the developing world. Her work at SELF brings her full circle to her early career when she spent time in the Central and South American bush.  There, she witnessed first-hand the consequences of energy poverty. Karen also brings over…


Margaret B. Peppercorn, MD, FAAP, is a board-certified pediatrician who was in private practice for more than 30 years before joining NEAVS’ Medical Advisory Board and now Board of Directors. She is a graduate of Harvard University and Harvard Medical School and completed her pediatric training at Children's Hospital National Medical Center and Boston City Hospital. As a NEAVS’ Medical Advisory Board Member, Dr. Peppercorn co-authored NEAVS’ study, A Review…


Perry Steinberg is a graduate of New York University with a Bachelor of Science degree in Accounting and a MBA. During the first 20 years of his career, his work focused on financial analysis, budgeting, and strategic planning while working at Arthur Anderson, CBS and American Express. For 30 years, along with his business partner, Perry owned The American Program Bureau (APB). APB operates as a global speaker, celebrity, and entertainment…

Corporate Clerk

Angela Steadman received her Bachelor of Science degree from Pepperdine University and her Juris Doctor degree from Boston College. After graduating from law school and passing the Massachusetts bar, she practiced law at Ficksman & Conley in Boston for eleven years, becoming a partner in the firm. After her tenure at Ficksman & Conley, Angela established her own practice in North Andover, where she practiced for ten years, continuing to specialize in…


Program Manager

Elizabeth Magner, Ph.D., is a Program Manager at NEAVS. Elizabeth joined NEAVS in September 2015 and focuses on research, public policy efforts, and public outreach and education. Elizabeth grew up in Massachusetts and holds a Ph.D. in political sociology from Boston College and a Bachelor of Arts in neuroscience from Colby College. To contact Elizabeth, please email emagner@neavs.org.

Director of Development

Ed Butler is the Director of Development at NEAVS. Ed joined NEAVS in January 2018 and is responsible for implementing a goal-driven fundraising strategy, which includes new donor acquisition, sustaining individual donors, implementing fundraising events, and managing an effective development department. Ed grew up in Massachusetts and holds a Bachelor of Arts degree in History from the University of Massachusetts, Dartmouth. To contact Ed, please email ebutler@neavs.org.

Development Coordinator

Christina Papianou is a Development Coordinator at NEAVS. Christina joined NEAVS in May 2015 and helps with member services, fundraising, event planning, and gift processing. Christina grew up in Massachusetts and holds a Bachelor of Arts degree in Political Science and Environmental Studies from Northeastern University. To contact Christina, please email cpapianou@neavs.org.