The life-saving heart surgeries and interventions performed by Heart Care International would not be possible without the commitment of its administrative team who work tirelessly alongside the medical team captains, team members, host country partners, medical corporations and philanthropic donors.


Margaret Feldmeth was appointed Executive Director of Heart Care International effective September 1, 2017. Margaret holds a Bachelor of Arts in Psychology and a Masters in Social Work. Her professional work experience includes social services and trauma counseling in hospital emergency rooms, and mission trip work in Mexico, Guatemala, and under-served areas in the United States. Margaret received both degrees from the University of Texas at Austin.

Walter Primoff was appointed controller of Heart Care International in June 2016. Walter has broad experience in general non-profit accounting, and private foundation and executive and technology management. He also serves as Managing Trustee of the Margaret Neubart Foundation. Between 1984 and 1999, Walter was the deputy executive director of the 30,000 member New York State Society of CPAs. Walter is a CPA in New York and a graduate of New York University.

Betsy is Heart Care International’s Logistics Director. A native Spanish speaker, Betsy is a long-standing member of the board of Heart Care International. She is Captain of its pediatric Intensive Care Unit team and has volunteered on a majority of its mission trips over the past 23 years. In addition, she has developed, overseen and taught Heart Care International’s in-country nursing training sessions. Betsy has over 35 years’ experience as a cardiac ICU nurse.