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Meet our team


CASA is proud to introduce our agents of change who lead community efforts to address the root causes of alcohol, tobacco, marijuana, and illegal drug use and abuse using research-based prevention strategies.  

Donna is a seasoned advocate for community empowerment and family well-being, leveraging her expertise in advocacy, family support, and resource allocation. As the Executive Director of CASA since January 2024, she spearheads initiatives that enlist neighbors as drivers of positive social change, fostering nurturing environments and enhancing the quality of life in neighborhoods. With a BA in Communication from California State University, San Marcos, and a Master’s Degree in Leadership from Azusa Pacific University, Donna embodies integrity, compassion, and resilience in her leadership, guiding CASA towards its mission of transforming communities and empowering families.

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Donna Colbert, MAL

    Executive Director

    T. 619.442.2727 ext. 101

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    Rebecca Branstetter

      T. 619.442.2727 ext. 109

      Public Health Advocate

      Rebecca comes to CASA with a background in child advocacy, public relations, and association management. Her public health advocacy focus at CASA includes monitoring local, state, and federal government decision-making to help ensure that elected and appointed officials keep safe and healthy neighborhoods front and center in their deliberations. A relative newcomer to the San Diego area, she is a graduate of Furman University and spent most of her career in the Southeast and New Jersey.

      Jean was the Coordinator of Drug Free Julian Community Coalition for CASA for seven years. She comes to public health work with a strong background in community organizing and youth education. Jean is currently the coordinator of our Tobacco Control Program. She holds a BA in Education from San Diego State University.

      Jean Duffy

        Public Health Advocate

        T. 619.442.2727 ext. 105

        Fadya Abdullah

          Public Health Advocate

          T. 619.442.2727 ext. 111

          Fadya is a public outreach and social media specialist who assists in marketing efforts to promote organizational events, efforts, and programs. She obtained a Bachelor of Science degree from San Diego State University in Sociology with minors in Digital & Social Media Studies and Arabic & Islamic Studies, and an additional certificate demonstrating mastery of the Arabic Language.

            Caden is a strong advocate for healthy neighborhoods and assists on several projects including policy change initiatives and youth leadership development, with prior experience in education and policy work. He completed his bachelor's degree in Communications from San Diego Christian College with a minor in English.

            Caden Dougherty

              Public Health Advocate

              T. 619.442.2727 ext. 108

              Tammy Tran

                Public Health Advocate

                T. 619.442.2727

                Tammy works as a public health advocate and legislation tracker. Additionally, she provides support to CASA's youth-led community groups and has experience working with youth as a mentor for various leadership programs. Tammy is currently pursuing a degree in Political Science with a specialization in Public Law at the University of California, San Diego.

                  Michelle is passionate for youth led change and limiting youth access to tobacco, alcohol and other substances. She specializes in youth development and has worked with young people across San Diego County since 2020 in tobacco and alcohol advocacy and prevention. She completed her University Studies of Humanities and Fine Arts certificate at Grossmont College and is currently pursuing a degree in Communications at the University of California, San Diego.

                  Michelle Tan

                    Public Health Advocate

                    T. 619.442.2727 ext. 104

                      El Cajon Collaborative Coordinator

                      T. 619.442.2727

                      Carol Lewis

                      Carol coordinates the 80+ member El Cajon Collaborative (ECC). The ECC provides local connectivity to the San Diego Association of Government’s Regional Transportation Plan to increase local walkability, access to healthy food, and services for the region’s large refugee population. Carol also manages web-based resource network of health and human service programs and providers. 

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