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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,
Program Administrator for West Africa and PHIA

A headshot of a person who is wearing glasses.

Cathy Mwangi,
Director of Operations

Pacha Villalba-Diebold, MS

Pacha Villalba-Diebold, MHS,
Program Administrator for Southern and East Africa

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

A photo of Dr. Sylvia Adebajo with a dark background

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
Kenya Country Director


Cyprien Baribwira, MD

Cyprien Baribwira, MD
Rwanda Country Director

A headshot of a person wearing glasses and a gray suit with a blue shirt.

Abubakar M. Maghimbi, MD
Tanzania Country Director

Robert L. Scheneberger, MD

Robert L. Sheneberger, MD
Zambia Country Director


A man wearing a black tuxedo.

Thoko Kalua, MBBS, MSc
Malawi Country Director

Reson Marima, MD
Interim Botswana Country Director



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