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.
Executive Leadership
Chair and Governing Board
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
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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.
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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.
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Cynthia Mwase
Director, Health, Africa
Cynthia Mwase leads the foundation’s health strategy in Africa.
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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
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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.
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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.
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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.
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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.
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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
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Melinda French Gates
Co-chair (2000-2024)
View profile: Melinda French GatesMelinda French Gates is a philanthropist, businesswoman, and global advocate for women and girls. She founded and co-chaired the Gates…
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Warren Buffett
Trustee 2006-2021 (emeritus 2021)
View profile: Warren BuffettWarren Buffett helped shape our vision and developed strategies to address some of the world’s most challenging inequities.
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William Gates Sr.
Co-chair 2000-2020 (d. 2020)
View profile: William Gates Sr.William H. Gates Sr. (d. 2020) guided the vision and strategic direction of the foundation and served as an advocate…
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.



















