About Us


  • Mark Diel
    Mark Diel

    Executive Director and CEO

    Mark comes to CCHI after 9 years as Executive Director and CEO of Children’s Health Initiative Napa County, where he developed the first nonprofit insurance brokerage firm in California serving individuals and families. He built a county-wide collaborative of 42 agencies and guided Napa County into a leadership role at the state level, working to provide affordable health insurance to everyone in California regardless of race, ethnicity, or family income.

    Prior to his work in Napa County, he managed public health programs in Yolo County, including the Women Infants and Children Program, he developed mobile medical, dental, and optometry clinics based in schools and community centers, and a Health Promatora program in Los Angeles. Mark holds a Master of Public Health degree.

  • Yaomee Xiong

    Grants & Contracts Manager

    Yaomee Xiong joined CCHI as the Contracts and Grants Manager providing infrastructure to managing activities relating to Member Contracts and Grants. She has 3+ years working with under served and underrepresented communities through the social service non-profit sector at a direct staff and supervisory level. Yaomee graduated from the University of Wisconsin- Milwaukee with a Bachelor of Science in Health Care Administration and a Bachelor of Art in Political Science. She is a transplant from Minneapolis, MN. In her free time Yaomee loves exploring nature and trying different ethnic food.

  • Ema Perez

    Program Coordinator

    Ema Perez was hired in March 2020 as a Program Coordinator with California Coverage and Health Initiatives (CCHI). Ema comes aboard with excellent professional skills and qualities. She recently relocated to California from Wisconsin. She brings great management skills and attributes from Wisconsin where she was a case manager in the Child Support Agency (CSA) and handled a complex caseload of nearly 1,300 cases. Through the CSA, Ema followed the Department of Families and Children rules, policy, procedures, and state regulations from 01/2016 to 02/2020. Prior to 2016, Ema worked for Yolo County Department of Employment and Social Services as an Administrative Assistant for 4 years. While employed with Yolo County, she gained experience and knowledge in working with Cal-Fresh, Medi-cal, Cal-Works, and Healthy Families programs where she had direct contact with the public. Ema is bi-lingual in Spanish and English. She received her A.A in Administration of Justice from Woodland Community College and transferred to California State University of Sacramento for her bachelor’s in Social Work. On Ema’s free time, she enjoys spending time with her husband and 4 children doing outdoor activities, watching movies, and going to church. Ema also enjoys cooking new recipes for extended family. Now that her children are teenagers, her family plans on exploring and traveling the world.

  • Mary Jordan

    Program Assistant

    Mary joined the CCHI team in November 2020. Mary comes to CCHI with over fifteen years of experience working with non-profits. She has an extensive administrative background. Mary has also coordinated large and small event logistics. Born and raised in Sacramento, Mary loves her community and being able to assist in the mission of CCHI.