Staff & Boards


We love to roll the credits, celebrating our dedicated community of team members, social scientists, supporters, and advocates. We maintain offices in South Burlington, Vermont and in active countries around the world. We also have staff who work remotely from around the world, including Washington DC, New York, Los Angeles and Montreal.

William Ryerson, MPhil

President & Founder of PMC
Bill Ryerson

Mary el-afandi

Research Associate

Ronald Ahirirwe

Country Director, Uganda

Ana Akin

Program Associate
ana staff profile

Sandy Bender

Administrative Coordinator


Country Director, Democratic Republic of the Congo

Elizabeth Borg

Vice President of Development
Liz Borg headshot

Natalia Cereser

Vice President of International Programs
Natalia Cereser

Samuel DiChiara

Research Associate

Jean Luc Dushime

Program Manager

Katie Elder

Development Specialist
Katie Elder

Hailegnaw Eshete, PhD, MPH

Country Director, Ethiopia


Sr. New Business Development Associate

Christina Guérin

Country Director, Haiti

Todd Hawk

Director of Information Technology
Todd Hawk

Barbara Johnson

Human Resources Services Manager
Barbara Johnson

Susan Jones

Senior Finance Associate
Susan Jones

Sandy Jonah, MA

Program Manager
Sandy Joseph

Charles Kalonga, MBA

Country Director, Zambia

Tom Kazungu

Country Director, Kenya

Erik Mandell

Director of New Business Development – International Programs

Ephraim Okon

Country Director, Nigeria

Berlyn Olibrice

Program Manager
Berlyn Staff Bio Photo

Cecilia Orvañanos

Country Director, Mexico

Rajan Parajuli

Country Director, Nepal

Cody Peluso

Digital Advocacy & Mobilization Manager
Cody Peluso and his dog

Aziah Kamari Pless

Content Strategist

William J. Rider, CPA

Vice President of Finance

Amy Henderson Riley, DrPH

Director of Research, Evaluation, and Impact

Lamoussa Robgo

Country Director, Burkina Faso

Moussa Abdou Saley

Country Director, Niger

Wendi Stein

International Programs Operations Manager

Missie Thurston

Vice President of Marketing and Communications
Missie Thurston

David Walker, MBA

Executive Vice President
David Walker