Our Board and Staff strive to provide the SGV community with the support and resources they need to thrive.

We are composed of determined and compassionate individuals working effortlessly to improve the livelihoods of the people around us. 

Board of Directors

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Debbie Chun 

Debbie has served as Board Chair at Catalyst since 2009, and enjoys the opportunity to be a "catalyst" between the church and the community they serve. It's been a pleasure to see how Catalyst has been at the forefront intersecting the faith community with school gardens, helping families in need and building healthy relationships. Debbie grew up in Southern California and attended USC, where she graduated with a Business Degree. She has worked as a Marketing Analyst for many years before pivoting to the nonprofit sector, where she worked at Alhambra True Light Presbyterian Church and more recently at Asian Pacific Community Fund.

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Carolyn Yep 

Carolyn currently serves as the CSGV Secretary, recording the minutes of our Board meetings. She also serves as the Bookkeeper for CSGV and provides financial guidance for the organization. Carolyn Yep joined the Board of Catalyst at its inception in 2017 after retiring as a Finance Manager from the aerospace industry with Raytheon Technologies. Carolyn holds a BS in Business Administration from the University of Southern California and an MBA from Loyola Marymount University. During her free time, she enjoys cooking, baking and staying active by playing volleyball.

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John Lewis

John is responsible for leading Urban Strategies’ collaborative efforts focused on serving youth and families on the West Coast since 2009. These collaborations have allowed Urban Strategies to design and manage twelve county, state, and federal projects that have impacted over 50,000 youth and their families throughout Southern California. John oversees and support the implementation of four federal grants that provide healthy relationship skills to over 2,000 youth annually. Additionally, John has led the development of Project With, a new innovative approach to teen pregnancy prevention with justice-involved youth that is being rigorously evaluated in Southern California. Before joining Urban Strategies, John gained over 14 years of experience in urban youth outreach and development. As one of the original designers of the Urban Youth Workers Institute, John was critical in implementing training and support activities for urban youth workers nationwide. Along with his work on an annual national conference that attracted more than 1,800 attendees, John organized and helped develop regional conferences that trained over 3,000 youth workers in 23 urban cities annually. John earned a bachelor's degree in business administration from Biola University and a master's in Christian education from Talbot Theological Seminary. 

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Winnie Kwan 

Winnie is a member of Catalyst's Board of Directors. Her main responsibilities include supporting the rest of the CSGV Board and Staff in various projects and goals. She graduated from Cal State L.A with a degree in sociology. She is currently working for the City of Alhambra. 

Bill Mao

Bill Mao is the recently retired Chief Information Officer at the Orange County Transportation Authority (OCTA). He started his career there as its Manager of Financial Planning and Budgeting (FP&B). He later became head of the agency’s information technology department. There, he restructured the department into a customer oriented, technology-embracing organization whose goal is to bring relevant value-added technology to OCTA’s diverse business units. His corporate career includes key management positions in finance and information technology with the Walt Disney Company, Digital Equipment Corporation and Xerox. Mr. Mao received his Bachelor of Arts in Economics from the University of California at Los Angeles and an MBA from Pepperdine University. He is tri-lingual, being fluent in Spanish, Mandarin Chinese and English.

Julie Tanaka

Julie Tanaka has been the Senior Nutrition Technical Advisor for Samaritan’s Purse since 2011 where she helps field offices with nutrition surveys and trainings, program design, proposal review, implementation, monitoring and evaluation and emergency relief.  As part of her job, Julie has conducted field visits to work with Nutrition Program Managers in
Honduras, Bolivia, Colombia, Haiti, Niger, Liberia, S. Sudan, Sudan, Democratic Republic of Congo (DRC), Uganda, Kenya, Iraq, Syria, Yemen, Cambodia, Vietnam, Myanmar, Philippines, Nepal, and the Democratic People’s Republic of Korea (DPRK).  Previously, Julie worked for Samaritan's Purse in Haiti, for World Vision International in their international headquarters office, and in China for a semiconductor manufacturing corporation and for a start-up business. Julie graduated from the University of California, Berkeley with a
B.A. in Development Studies and received a Master’s in Public Health with a Global Health emphasis, and a Master’s in Business Administration from Loma Linda University.  She also received her BS in Nursing from Western Governor's University.