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Leadership

The foundation’s leaders come from a broad range of backgrounds and have a diversity of expertise and experience that spans science and technology, medicine, public policy, education, communications, law, and business. Our leaders are guided by the foundation’s mission to create a world in which every person has the opportunity to live a healthy, productive life.




Scientific Advisory Committee

Our Scientific Advisory Committee comprises a group of esteemed experts from outside of the foundation who offer a wide range of experiences and perspectives. This group plays an important role in strengthening our work by offering independent assessments of our Global Health Division strategies and helping us evaluate results.


Meet our leaders

10 – 18 of 40
  • Chris Wolff

    Chris Wolff

    Deputy Director, Immunization Platforms

    Chris Wolff leads a team that focuses on strengthening immunization delivery platforms to reach more communities with vaccines and other vital services.

  • Christabell Makokha

    Christabell Makokha

    Deputy Director, Leadership Advising, Africa

    Christabell Makokha oversees strategy, financial planning, business operations, and impact measurement for the foundation’s Ethiopia and Nigeria teams.

  • Cynthia Mwase

    Cynthia Mwase

    Director, Health, Africa

    Cynthia Mwase leads the foundation’s health strategy in Africa.

  • Sanjana Bhardwaj

    Dr. Sanjana Bhardwaj

    Deputy Director, Program Advocacy and Communications, Family Planning / Maternal Newborn and Child Health / Primary Health Care

    Deputy Director, Program Advocacy and Communications, Family Planning / Maternal Newborn and Child Health / Primary Health Care Programs Connect

  • Ethan Wong

    Ethan Wong

    Deputy Director, Innovation and Learning

    Ethan Wong leads learning initiatives for the Primary Health Care team, with a focus on innovative service delivery models and increasing system efficiency to improve health outcomes in low- and middle-income countries.

  • Gian Gandhi

    Gian Gandhi

    Deputy Director, Vaccine Access

    Gian Gandhi leads a team that works to expand access to vaccines by fostering healthy markets and strengthening supply chains.

  • Greg Widmyer

    Director, Immunization

    Greg Widmyer leads the Immunization team which works with countries, multilateral organizations, the private sector, and civil society organizations to ensure the delivery of vaccines and sustained global commitment to immunization. Greg also serves as the foundation’s representative on the board of Gavi, the Vaccine Alliance.

  • Haddis Tadesse

    Director, Ethiopia

    Haddis Tadesse oversees our work in Ethiopia and leads a team that manages programs and builds diplomatic relations with key partners and stakeholders across the region.

  • Haley Hill

    Director, Office of the President and Chief of Staff

    Haley Hill is the director, Office of the President, and chief of staff, Global Development Division.


Historical Leadership


More about the foundation

Our role

For over 25 years, the Gates Foundation has been committed to fighting the greatest inequities in the world.

How we work

We are focused on results. Those that can be measured. And those measured in ways beyond numbers.

Our story

Learn about the origins of the foundation and the values that drive our work.