Tammy Tumbling

Tammy Tumbling

Tammy Tumbling

Executive Vice President & Chief Operating Officer

(949) 553-4202 x246


Tammy Tumbling joins the Orange County Community Foundation (OCCF) as its first executive vice president and chief operating officer. She brings over two decades of experience in corporate citizenship, utility operations and customer service to the position.

Tammy is responsible for providing strategic direction and oversight for the Philanthropic Strategy, Marketing & Communications, Center for Engaged Philanthropy, Donor Relations & Programs, Information & Technology, Human Resources and Business Continuity Planning work teams at OCCF.  She is also responsible for developing and implementing operational strategies to result in increased capacity to sustain OCCF growth, maximized use of technology and an enhanced donor experience.

In her role of EVP & COO, Tammy also serves as a change agent and a thought partner for the President and Board leadership on execution of OCCF’s strategic goals.

Tammy joined OCCF from Southern California Edison (SCE), where she held roles in utility operations, customer service, corporate citizenship and philanthropy. Prior to her tenure at SCE, Tumbling spent nearly a decade in the nonprofit sector at the Music Center of Los Angeles and the United Way of Greater Los Angeles.