Executive Leadership

From left to right: Ritchie Geisel, Diana Buehler, Miriam Gonzalez, Mike Still

Ritchie L. Geisel, President & CEO

Ritchie Geisel was chosen to lead Bienvenidos as its President and CEO in 2008. He brings over two decades of experience in senior leadership positions in the nonprofit sector, helping to lead two of organizations through processes of transformational change. Ritchie began his career in academic fundraising and has since been focused on social service organizations. After earning a degree in history from Princeton University, Ritchie went on to obtain an MBA from Stanford University. He has a strong track record in leadership, fundraising, and strategic planning, which was recognized when he received one of four “Nonprofit Leadership Impact Awards” presented by the Los Angeles Center for Nonprofit Management in 2013.

Diana Buehler, Chief Operating Officer

Diana Buehler has been with Bienvenidos since close to its inception. In her role as Chief Operating Officer, Diana is deeply involved in governance, risk management, and the facilities aspects of the organization. In a break from Bienvenidos, Diana earned her degree in political science and a doctorate degree in law from the University of La Verne. She is continually increasing her expertise in the realm of operations and management, having recently completed her Masters of Leadership and Management, with an emphasis in the nonprofit sector, also from the University of La Verne.

Mike Still, Chief Financial Officer

Mike Still joined Bienvenidos in August 2014 after nearly 30 years in senior finance roles in the nonprofit sector. Prior to Bienvenidos, Mike’s experience included leading Teach Overseas as the President and CEO, serving as the CFO at Los Angeles Christian Health Centers, and in multiple finance positions with World Vision. Mike has an MS in Economics from Oklahoma State University and an MBA with finance emphasis from the University of California Berkeley.

Miriam Gonzalez, Chief Program Officer

Miriam Gonzalez serves as the Chief Program Officer for Bienvenidos and brings 17 years of experience from the social services field. As CPO she provides leadership for the organization’s three programmatic divisions and acts as the liaison with county social service entities and other community organizations. Miriam has a BS in psychology from the University of Northridge and an Masters in Marriage and Family Therapy from Pepperdine University.