Supporting supply chains
to boost health outcomes
About the ISG
The Interagency Supply Chain Group (ISG) is a network that unites global health partners across cross-disease initiatives, all focused on strengthening global health supply chain systems. We are working towards a future where effective, efficient supply chains are integral to global health, ensuring equitable access to essential health products and services and a commitment is to improve health outcomes in Low- and Middle-Income Countries (LMICs).
The ISG community is built on three core pillars: Collaboration to inform innovative solutions that advance strategic goals for global health supply chains; Knowledge and asset exchange within the community; and Advocacy for the transformative power of supply chains in improving health outcomes.
The ISG is an inclusive global health supply chain community, open to all, and governed by a Steering Committee with representatives from governments, UN agencies, academia, funding organizations, and civil society.
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Meet the Steering Committee
Ann Allen is a global health supply chain leader with over 20 years of experience in strategy, performance management, and systems strengthening. She is currently Senior Program Officer for Supply Chain Systems at the Gates Foundation, where she supports global health agencies and funds. Previously, she held senior roles at Deloitte and Médecins Sans Frontières, where she led supported reform and capacity building in humanitarian and development contexts across Africa, Asia, and the Americas.
Anne Cabrera-Clerget is a supply chain and health systems expert with over 25 years of experience in sourcing, procurement, logistics, market shaping and health/nutrition systems strengthening. She is currently Chief of Supply Chain Strengthening at UNICEF Supply Division, and has held supply leadership roles with UNICEF and WHO in Iraq, Burundi, and Madagascar. She began her career in the private sector with Accenture Strategy and Toyota Europe. Anne brings a strong focus on bridging strategic sourcing with public health outcomes.
Dr. Dale Rogers is a global thought leader in supply chain management and the ON Semiconductor Professor of Business at Arizona State University. He directs the Frontier Economies and Internet Edge Supply Chain Labs at ASU, and has led major global research initiatives on reverse logistics, AI, and supply chain financing. A recipient of the CSCMP Distinguished Service Award, Dale continues to shape policy, innovation, and academic research across continents.
Dr. Karan Sagar is a public health leader with over 25 years of experience in health systems strengthening and immunization. He currently leads Comprehensive Vaccine Management at Gavi, supporting countries to enhance immunization coverage and equity. Prior to Gavi, Karan served in senior roles at the World Health Organization and John Snow, Inc., and provided technical leadership across India’s national immunization programs. His expertise spans policy development, implementation, capacity building, and strategic engagement.
Freddy Nkosi is a global health leader with deep experience in governance, stakeholder engagement, and program management. He serves as Senior Director of West and Central Africa at VillageReach. He previously worked as DRC Country Director at VillageReach, and has worked with organizations including Mott MacDonald and international NGOs. He served on the Gavi CSO Steering Committee from 2019 to 2021, contributing to global health governance.
Karen Hong is a senior leader in procurement and supply chain management with over 25 years of experience across humanitarian, development, and private sector settings. She is Chief of Supply Chain Management at UNFPA, leading global sourcing strategies and access to health products in fragile contexts. Karen previously held leadership roles at World Vision, IDLO, UNDP, UNICEF, and Nike, advancing ethical procurement, change management, and public health supply systems.
Lisa Hedman
Group Lead, Supply and Access to Medicines
World Health Organization (WHO)
Lisa Hedman is a senior public health leader with over two decades of experience improving access to medicines in emerging markets. She leads the Supply and Access to Medicines Group at the World Health Organization, driving global policy and strategic partnerships. Previously, she led public health procurement strategy at PATH, delivering large-scale initiatives in over 15 countries. Lisa brings expertise in regulatory systems, market shaping, and supply chain strategy across vaccines, maternal health, and infectious diseases.
Marasi Mwencha is a supply chain and health systems expert with over 20 years of experience managing health investments across Africa and Asia. He is currently Head of Supply Chain at the Global Fund, leading strategy development and end-to-end transformation in recipient countries. Marasi previously held senior roles at MSH and JSI, including country leadership roles on their flagship data systems and supply chain programs in Ethiopia and Tanzania. His expertise spans operations management, data systems, strategic engagement and policy making to improve access to health products.
Seife Demissie is a health supply chain and pharmacy leader with over 17 years of experience strengthening pharmaceutical systems in Ethiopia. He is currently Chief Executive Officer of the Addis Ababa City Administration Kenema Pharmacies Enterprise and previously served as Director of Pharmaceutical Supply & Service at the Addis Ababa Health Bureau, overseeing city-wide supply chains and clinical pharmacy services. Seife has led reforms in policy, emergency preparedness, and medical device management, focusing on integrated, data-driven, resilient health systems.
Silvia Rossi Tafuri is a public health and supply chain specialist with over 20 years of experience in humanitarian logistics, capacity strengthening, and sustainable supply chains. She is currently Head of Supply Chain for the World Food Programme in Malawi and previously led WFP’s global supply chain capacity strengthening work. Silvia has held leadership roles at Pamela Steele Associates, leading research and business development, and was a senior academic at Cranfield University, focusing on public health supply chains.
Stephen Mawa
Resilience and Capacity Development Advisor, Supply Chain Management Unit (SCMU)
United Nations Population Fund (UNFPA)
Stephen Mawa is a pharmacist and public health leader with over 20 years of experience in supply chain management, epidemiology, and regulatory science. He currently serves as Resilience and Capacity Development Advisor at UNFPA, and previously led the Demand and Supply Planning team. Stephen has held leadership roles in Uganda and globally, including with Management Sciences for Health, Makerere University–Walter Reed Project, and Mavid Pharmaceuticals. His expertise includes commodity security, health systems strengthening, and new health technologies.
Olivier Defawe
Director, Global Technical Team & Senior Specialist, Private Sector Engagement
VillageReach
Olivier Defawe is a leader in global health innovation with 18 years of experience in private-sector engagement and pioneering solutions to strengthen healthcare delivery in Africa. As a Director on the Global Technical Team and Private Sector Engagement Senior Specialist at VillageReach, he plays a pivotal role in guiding technical strategy and partnerships, having founded the Drones for Health program and established operations in the DRC. He also contributes to global platforms such as the Gavi Immunization Supply Chain Task Force and UNICEF's System Design Working Group.
The ISG Integration Task Force (ITF)
In 2025, the Interagency Supply Chain Group will be leading a new initiative to address the critical challenges of Supply Chain fragmentation by forming a Taskforce on Supply Chain Integration.
This Taskforce will bring together professionals from across the global health supply chain for this exciting initiative, working closely with governments, UN agencies, academia, funders, the private sector, and civil society. Together, we will drive progress by:
Working across different health programs and organizations to improve coordination
Creating practical approaches and solutions to support integration
Helping shape policies and strategies at global, regional, and national levels
Advocating for more funding and resources to drive integration efforts
While Integration is not a new theme for many of us, given today's realities we believe it is more important than ever.
As the work of the ISG continues and expands, we will convene additional Working Groups focused on priority initiatives.