Leadership

Meet our Executive Leadership Team as well as our current Board of Directors.

Cornerstone Montgomery’s Executive Leadership Team exemplifies a balance of strategic vision, compassion, and a client-centered approach to mental health care.

CEO/President, Cari Guthrie’s transparent leadership fosters partnerships with public officials, while ensuring the organization’s mission remains focused on providing high-quality care.

Chief Administrative and Compliance Officer, Marisa Gillum safeguards operational excellence, ensuring adherence to compliance and legal standards while supporting organizational growth.

Chief Program Officer, Lisa Katz prioritizes evidence-based practices, enhancing program consistency and driving innovation to better serve clients.

Chief Medical Officer, Dr. Joy Chang leads clinical operations with a focus on redesigning healthcare systems, advancing the Certified Community Behavioral Health Clinic (CCBHC) program.

Chief Financial Officer, Stan Estremsky works with various departments to support operational and financial performance to assure Cornerstone has the funds to serve our clients.

Director of Human Resources, Liz Gatti is responsible for fostering a positive and inclusive workplace culture, focusing on workforce development and retention, ensuring staff are equipped to thrive while advancing the organization’s mission.

Development Officer and Marketing Communications Director, Quincy Inman builds strong partnerships and innovative fundraising strategies that strengthen revenue streams.

Together, they lead Cornerstone Montgomery with a shared commitment to improving the lives of the individuals and families they serve.