C. David Gammel

C. David Gammel is the Executive Director of the American Association of Physicists in Medicine (AAPM), a scientific, educational, and professional organization of more than 8,200+ medical physicists worldwide. Gammel became the organization’s fourth Executive Director on Jan. 2, 2024.

Gammel has served on the boards of the American Society of Association Executives (ASAE), the ASAE Foundation, and the Council of Engineering and Scientific Society Executives (CESSE). Gammel is a Fellow of ASAE and has authored many publications about organizational best practices and volunteer engagement.

Prior to joining AAPM, Gammel was the Chief Practice Officer at McKinley Advisors, a leading association advisory services firm, where he chaired the company’s Strategy & Innovation Practice. There, he engaged with many leading associations with a particular focus on medical, scientific, and engineering disciplines. In the health care arena, Gammel’s clients have included the National Academy of Medicine, American Society of Clinical Oncology, Society of Thoracic Surgeons, and the Infectious Diseases Society of America.

Gammel served nine years as Executive Director of the Entomological Society of America (ESA), an association supporting insect scientists and related professionals. ESA grew significantly during Gammel’s tenure and dramatically increased its impact in policy and as a global convenor for the discipline.