Leadership
Executive Leaders
Sarah Bouchie
- President and Chief Executive Officer
Sarah Bouchie became President and Chief Executive Officer in January 2024. In this role, she collaborates with Helen Keller Intl’s Board of Trustees, leadership team, and staff, along with partner organizations and global leaders, to advance Helen Keller’s mission around the world.
Shawn K. Baker, MPH
- Executive Vice President, Programs and Partnerships
Shawn Baker leads Helen Keller’s efforts to support our world’s most vulnerable communities through strengthening food and health systems using scientifically proven solutions that are feasible, scalable, and equitable.
Fatoumata Diouf
- Managing Director, Central and West Africa
As Managing Director, Central and West Africa, Fatoumata leads the development and execution of a vibrant pipeline of high-quality programs across Central and West Africa including Burkina Faso, Cameroon, Cote d’Ivoire, DRC, Guinea, Mali, Niger, Nigeria, Senegal, and Sierra Leone.
Peter Kariuki
- Vice President, People and Culture
Peter Kariuki leads Helen Keller’s efforts to strengthen its global workforce and cultivate an inclusive, equitable workplace culture. With more than 20 years of experience in strategic human resources, Peter has built and led global human resources teams, managed organizational change, and advanced talent management strategies to enhance employee engagement and impact.
Susan Kotcher
- Chief Growth and Branding Officer
Susan Kotcher is a seasoned senior leader, creative fundraising strategist, and external relations expert who has built, restructured, and led high-performing teams for major international and national nonprofits. Susan joined Helen Keller Intl in 2020 as Chief External Relations Officer and in 2025, became Chief Branding and Growth Officer, leading the organization’s flexible funding, visibility-raising, and US program strategies.
Lan Mercado
- Managing Director, East and Southern Africa and Asia
Lan Mercado joined Helen Keller Intl in October 2025 and oversees country leadership, operations, income growth, and impact on improving people’s lives in Bangladesh, Cambodia, Kenya, Madagascar, Mozambique, Nepal, Philippines, and Tanzania. She also advocates, influences, and strengthens the organization's relationships with stakeholders.
Joyce Ngugi
- Chief Financial and Operating Officer
Joyce Ngugi joined Helen Keller Intl in November 2025 and oversees the organization’s financial health and operational effectiveness, ensuring resources, systems, and talent are optimized to advance Helen Keller’s mission.
Senior Leaders
Rahul Ali, MBBS, MS (Ophthal.), MPH, MBA
- Vice President, Eye Health
Sarmento Júlio Armando
- Country Director, Mozambique
Ndèye Astou Badiane, MD
- Country Director, Senegal
Yves Ilunga Banze, MD, MPH
- Country Director, Democratic Republic of the Congo
Adèle Bienvenu
- Country Director, Niger
Melissa Brody
- Head, Center for Marketing and Branding
Volkan Cakir
- Head, Center for Strategic Partnerships
Georges Dimithe, PhD
- Zonal Director, Sahel Region (Burkina Faso, Mali and Niger) and Country Director, Burkina Faso
Romance Dissieka, MD, MPH
- Interim Country Director, Côte d’Ivoire
Craig Evans
- Vice President, Individual Giving
George Kabona
- Country Director, Tanzania
Rolf Klemm, DrPH, MPH
- Vice President, Nutrition
Hou Kroeun, MPH
- Country Director, Cambodia and Acting Country Representative, Philippines
Robert Mba, PhD
- Country Director, Cameroon
Vanessa Mejia, PhD, MPH, CLC
- Director, US Programs
Aliyu Mohammed (Jabo)
- Country Director, Nigeria
Fatou Ndiaye, MD
- Program Director, Vitamin A Supplementation
Peter O. Ofware
- Country Director, Kenya
Philomena Orji
- Program Director, Transforming Lives Through Nutrition
Pooja Pandey Rana
- Country Director, Bangladesh and Nepal
Steven Reid
- Director, Neglected Tropical Diseases
Ric Plaisance
- Vice President, Information and Operations Systems
Bonaventure Rakotomalala
- Country Director, Madagascar
Ouassa Sanogo, MD
- Country Director, Mali
Angela Weaver, PhD, MPH
- Head, Center for Program Impact
Mohamed Lamine Yattara
- Zonal Director, Guinea and Sierra Leone