A. Mario Castillo
Senior Managing Director
Mario Castillo is a nationally respected leader at the intersection of healthcare governance, public policy, and democratic stewardship. He serves as a board member of a keystone hospital in Texas, providing strategic oversight focused on institutional excellence, patient-centered care, and long-term sustainability.
Most recently, Mario has served as Chief Executive Officer of three leading, pro-democracy, nonpartisan organizations with significant national and international reach. In this capacity, he successfully transformed financially stressed nonprofits into profitable, mission-driven operations with strong financial reserves, while advancing initiatives that safeguard democratic norms and strengthen civic institutions.
Distinguished by intellectual rigor, ethical clarity, and disciplined execution, his work continues to shape health and socio-political affairs at both the state and national levels.