Our Staff
Isabel Becerra
President & Chief Executive Officer (CEO)
Isabel holds a degree in Psychology from Pomona College of the Claremont Colleges. In addition, she has completed programs in Leadership and Advocacy from UC San Diego. For the past 27 years, she has dedicated her career to public health with an emphasis in serving the underserved communities cared for by community health centers. In these efforts, Isabel has been able to lead initiatives which empower communities across the country to address and overcome barriers to health equity. She currently serves on the Board of Directors of California Primary Care Association, CalOptima Health, Waymakers Foundation, and the Latino Coalition for a Healthy California. Isabel also participates on numerous committees and has received awards for her service.
Since 2000, Isabel has been able to lead and represent communities in need in her hometown of Orange County. As the Chief Executive Officer, she spends her days negotiating and strengthening relationships that are aligned to ensure equal access to high quality, affordable and culturally competent health care for all. When not engaged in her role for the Coalition, you will find Isabel enjoying time with family at home or in the great outdoors either locally or across the country.
Ryan Yamamoto
Chief Operating Officer (COO)
Ryan has spent over fifteen years in health philanthropy and six years with health and human services organizations. In these roles, he was able to witness the countless acts of advocates and empowered communities locally and nationally fight for their health. Ryan returned to Orange County and joined the Coalition in late 2018 as the Chief Operating Officer, ensuring the organization, staff and member clinics have the resources and capacity to serve their patients and communities. Outside of the office, you will find him at home or at a golf course, in the outdoors, or at one of Southern California’s restaurants.
Ryan holds a degree in Health Science, with a concentration in community health from CSU Long Beach.
Thomas Sheil
Chief Financial Officer (CFO)
Tom earned his B.S. degree in Accounting Theory and has an extensive Finance and Accounting background. He has spent much of his professional life serving in nonprofit organizations both nationally and internationally. Tom also has broad experience in consulting, tax and business planning.
Tom enjoys working with people in a variety of capacities and recognizes that everyone has something special to contribute.
Sonia Shah, MPH
Vice President of Member Services
Sonia Shah serves as the Vice President of Member Services at the Coalition. She is the daughter of immigrant parents from India and although her father was an Accountant by training, he ventured into opening up his own business upon arriving to New York City. As such, her family didn’t have insurance coverage, and she spent most of her young childhood receiving care at Community Health Centers in New York City. This experience not only exposed her to Community Health Centers and the high quality care they provided, but living life without health care coverage, and watching her parents navigate systems and resources, with very limited English and understanding of the American culture, continued to show Sonia the challenges different communities face to get the basic and essential care needed. This led Sonia into pursuing not only a Bachelors in Science with a major in Biology and a Minor in Psychology, but also a Masters Degree in Public Health with a focus on Hospital and Health Administration.
Sonia has always had a passion to connect communities, whether it be her small group of friends, or larger groups of people. Working at the Coalition allows her to put her passions, and her skills together to find ways to suppor the member health centers and the communities at large.
Andrew Niiro
Director of Health Information Technology
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Adriana Arreola
Community Healthcare Navigator
Aurora Garcia-Barrera
Director of Policy and Government Affairs
Elizabeth Cuevas
Community Healthcare Navigator
Enrique Quezada
Program Manager of Workforce and Workforce Development
Imelda Buncab
Director of Branding and Communications
Isabel Inzunza-Zamorano
Community Healthcare Navigator
Ivonne Magallanes,BS, CPHQ, CPPS
Director of Quality Management
Joshua Castro
Project Manager of MATCONNECT Program
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Kevin Tygard
Project Manager of MATCONNECT Program
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Melissa Guerrero
Executive Assistant
Nancy Ruelas-Lopez
Community Healthcare Navigator
Ryan Pham
Project Manager of Policy and Government Affairs
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Scott Serpa
Integration Coordinator/Data Analyst
Stephanie Hernandez
Program Manager of Care and Coverage
Stephanie Lomeli
Community Healthcare Navigator
Yong Yi
Accountant