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 optometric clinics based in schools and community centers, and a Health Promatora program in Los Angeles. Mark holds a Master of Public Health degree.

  • Maria Romero-Mora
    Maria Romero-Mora

    Director of Programs

    Maria Romero-Mora joined CCHI as Project Coordinator of the Connecting Kids to Coverage Project, a national campaign through the Centers for Medicare & Medicaid Services, for which she manages the collaboration, program management, and evaluation of partner organizations based in 7 counties. Maria has ample experience in health insurance education and enrollment having started as a Certified Application Assistance (CAA) in Yolo County in 2007 with the local Community Health Initiative (CHI). Her work included direct engagement with migrant populations to identified safety net resources, health coverage enrollment, and the development of safety net programs. Maria is bilingual, bicultural and writes Spanish fluently. She received her B.A. in Community and Regional Development from the University of California, Davis. Maria is a certified enrollment counselor (CEC).

  • Natasha Phillips
    Natasha Phillips

    Program Coordinator

    Natasha comes to CCHI with a background in nonprofit communications, development, and program implementation. A Sacramento transplant, she is originally from the East Coast, and received her BA in Government and Economics from Wesleyan University. After graduation she worked as the Program Coordinator at an Arabic Language Institute in Muscat, Oman. Returning to the US, she moved to Sacramento to work as the AmeriCorps VISTA Capacity Building Specialist at Opening Doors, a local refugee resettlement agency. She is passionate about working to improve living conditions for communities, regardless of immigration status, income, ethnicity, etc.

  • Aissa Perez
    Aissa Perez

    Program Coordinator

    Aissa Perez recently graduated from UC Davis with degrees in English and Sociology, with an emphasis in social services.Throughout her college career she interned with various social service and non-profit organizations, including the International Rescue Committee and PICO California. Originally from Southern CA, she loves Northern California and is excited to be a member of the CCHI team.

  • Careen Clare Marinas
    Careen Clare Marinas

    Office Manager

    Careen joined CCHI in 2017. As the Office Manager/Executive Assistant, Careen oversees human resources, finance, and administrative duties to ensure CCHI functions smoothly. Additionally, she serves as the liaison between the Board of Directors, member organizations and staff. She is passionate to work on issues related to access and quality health coverage and care for all Californians. Her past employment has given her the opportunity to work with a variety of groups including youth, students, educators, low-income families, migrant families, council members, and other government officials. Careen speaks English, Tagalog and Ilocano. Careen holds a B.A. in Business Administration.