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Core Leadership

Man E. Charurat, PhD, MHS,
Global Director


David J. Riedel, MD, MPH,
Medical Director

Peter Memiah

Peter Memiah, PhD, MS,
Director, Quality and Outcomes

Brenna M. Roth, MD, MPH
Senior Technical Advisor, Biosecurity


Kristen Stafford, PhD, MPH,
Deputy Director, Technical


Alash’le Abimiku, PhD,
Director, Laboratory Services

Joyce Johnson

Joyce Johnson,
Senior Strategy Advisor and Special Projects Program Administrator

John Nagiecki

John Nagiecki, MA,
Director, Communications and External Affairs

Pacha Villalba-Diebold, MS

Pacha Villalba-Diebold, MHS,
Associate Director, Country Management and Operations

Chinedu Agbakwuru

Chinedu Agbakwuru, MBBS, MS,
Senior Technical Advisor, Population HIV Impact Assessments

Marie-Claude Lavoie, PhD, MPH,
Director, Strategic Information
and Evaluation


Stephen Ohakanu,
Director, Health Informatics

Country Leadership

Sylvia Adebajo, PhD, MBBS,

Nigeria Country Director

A man wearing a sports coat and glasses stands in front of a hanging plant.

Dinis Jaintilal, PGDipPH,
Mozambique Country Director

Caroline Ng’eno, MD,
Interim Kenya Country Director


Cyprien Baribwira, MD

Cyprien Baribwira, MD,
Rwanda Country Director

Abubakar M. Maghimbi, MD

Abubakar M. Maghimbi, MD,
Tanzania Country Director

Robert L. Scheneberger, MD

Robert L. Sheneberger, MD,
Zambia Country Director


A headshot of a man wearing a suit with purple tie.

Visopo Harawa, PhD, MSc,
Deputy Malawi Country Director

Reson Marima, MD,
Interim Botswana Country Director



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