Our Board

Mr Omari Issa Chair, Amref Health Africa International Board

Mr Omari Issa


Effective September 1, 2013 Mr Omari Issa has been appointed as Board Chair of Amref Health Africa’s International Board. Mr Issa is currently the President’s Adviser/Chief Executive of the Presidential Delivery Unit in Tanzania.  Prior to this appointment he was the Chief Executive Officer of the Investment Climate Facility for Africa in Tanzania. Mr Issa holds a Master in Business Administration from Columbia University, New York and a Bachelor of Science (Honours)   from Polytechnic of Central London, UK.

Mr Issa, a Tanzanian national, has extensive experience in the management of international and local organisations. He has served as a board member and chairman of several organisations in various countries globally.  Having extensively collaborated with public and private sectors within these countries, he is well versed with pan-African networks.


Mr Jacques van Dijken Director, Amref Health Africa International Board


Jacques van Dijken obtained a master-degree in law at Utrecht University and spent his professional life in the financial services. As CEO, he chaired the management boards of DBV Insurance Company and Swiss Re Netherlands.

Jacques joined the supervisory board of Amref Netherlands in 2010 and has chaired the local Dutch Audit Committee since then. He has been a member of the Finance and Investment Committee as well as the Audit, Risk and Compliance Committee of Amref’s International Board since 2013.  Jacques is also the vice-chairman of the supervisory board of the ‘Friends of the Utrecht University Hospital' Foundation.


Mr Tito Alai Director, Amref Health Africa International Board

Tito Alai

Tito Alai is the principal at Mimi Africa, where he develops projects with Pan African potential in the converging Technology, Media, Telecoms, and Financial Services sectors.

Tito played a significant role in the development of mobile telephone networks across Africa and the Middle East as Group Chief Commercial Officer of Zain, and prior to that Celtel.  During his extensive international career Tito has been a growth champion across Central Europe, Middle East and Africa, Latin America, the Indian sub-continent, and low-income consumer segments worldwide. He started his career at Unilever, and has been based in London, Amsterdam and Bahrain.


Mr Tjarke de Lange Director, Amref Health Africa International Board

Mr Tjarke de Lange

Mr Tjark R.C. de Lange (1967) graduated in 1992 as a Maritime Officer, Nautical and Technical Engineer.
In 1997 Tjark founded Kapp Nederland B.V., a strong international player in a niche market, calculation and supply of industrial heat exchangers in the process industry. The company, from which Tjark de Lange is 100% share holder, has large international clients in the oil and gas industry and in the pharma, food, energy and shipping industry. Tjark de Lange holds several positions.

He is member of the Supervisory Board of the Van Gelder Group (a road construction company), he is trustee of VNO-NCW (the Dutch confederation of industry) and co founder and member of the Executive Board of the Lisbon Council (one of Europe’s leading think tanks). Tjark has been the chair of the Supervisory Board of Amref Flying Doctors in the Netherlands since 2015, and  a member of the international board of Amref Health Africa.


Professor Richard Otieno Muga Director, Amref Health Africa International Board

Prof Richard Muga

Professor Richard Otieno Muga is currently the chair of Amref Health Africa in Kenya board and an Associate Professor at the Great Lakes University of Kisumu (GLUK). Prof Muga also sits at the Amref Health Africa International Board. He holds a Master's degree in Child Health and Post-graduate Diploma in Health Systems.

Management. He has over 30 years of experience in Public Health Service most of which involved leadership and health systems management at different levels in the health sector. He has served as a member in the Country's Coordinating Mechanism (CCM) for the Global Fund. His main areas of interest include health systems management, health systems research, planning of health services, and donor support negotiations.

Dr Teshome Gebre Director, Amref Health Africa International Board

Dr Teshome Gebre

Dr Teshome Gebre holds an M.Sc. in Global Health Policy and a PhD in Health Care Management.  He has served in various senior programme management positions for about 18 years within the Ministry of Health of Ethiopia. 

In 1995, Teshome joined The Carter Center and served as a Country Director until transitioning to the International Trachoma Initiative in June 2011, when he was appointed to work as a Regional Director for Africa based in his home country, Ethiopia. 

He has authored and co-authored more than 65 publications, including contributions to book chapters. Dr Teshome has been serving Amref Health Africa in Ethiopia as Chairperson of the National Advisory Council since 2012.

Ms Kellen Eileen Kariuki Director, Amref Health Africa International Board

Ms Kellen Kariuki

Kellen Eileen Kariuki is the Executive Director and CEO for the Unclaimed Financial Assets Authority (UFAA), which was established by an Act of Parliament in 2011. She is also the Managing Trustee of Unclaimed Financial Assets Trust Fund.  Before joining the UFAA, Kellen had been at Citibank N.A serving in different senior leadership positions.
Kellen has held numerous Board positions including Chairperson of Citibank Tanzania Limited, Non-Executive Director of the Amref Health Africa International Board,  Non-Executive Director of Resolution Insurance Limited, Non-Executive Director of Citibank Uganda Limited, Chair of the Citibank Kenya Provident Fund, Non-Executive Director of Cititrust (Kenya) Limited, and Non-Executive Director of the  Kenya Roads Board.
She is a founding member of the Board of Advisors of the Strathmore Business School and has served as an elected council member of the Institute of Certified Public Accountants of Kenya.
In 2003, Kellen was awarded “The Moran of the Order of the Burning Spear” (MBS) by the President of Kenya. She was also recognized by the Kenya Institute of Management as the “Professional Manager of the Year” during the Company of the Year Awards in 2003.
Kellen holds an Msc in International Human Resource Management from Cranfield University in the UK. She also holds an MBA in Strategic Management and a Bachelor’s degree in Accounting, both from United States International University. She is a Fellow Certified Public Accountant (FCPA (K).

Timothy S. Wilson Director, Amref Health Africa International Board

Timothy Wilson

Timothy S. Wilson is the Managing Director and Co-Head of Global Risk Management Advisors, the leading firm providing outsourced risk management services for asset management firms and institutional investors.  Previously, Tim served as Chief Risk Officer for the investment management company Caxton Associates. 

Prior to joining Caxton, Tim worked in the risk function at Morgan Stanley including heading the market risk function for Europe and Asia based in London.  He had previously served as an Economist in the Division of International Finance of the Federal Reserve Board and as a Research Fellow of the Brookings Institution. 

Tim has helped lead a range of public and private sector policy efforts to promote enhanced financial stability and sound financial risk management practices. 

He was educated at Harvard College and Stanford University, is a member of the Editorial Board of the Journal of Risk Management in Financial Institutions, resides in New York City and in his leisure time particularly likes to read new work in fiction, history, development economics and cell biology.

Judith Chinkumbi Director, Amref Health Africa International Board

Judith Chinkumbi

Judith is a successful professional, mother of two girls and a firm believer in the power of social entrepreneurship as the answer to some of the most pressing challenges of our time.

With over 22 years work experience in the financial services, auditing, management consulting and fund management, she has managed to find the balance in remaining highly effective in business while changing the lives of vulnerable women, children and learners in poor schools through Sešego Cares, a charitable organization which she and a small group of dynamic women established 11 years ago.

Judith holds an MBA from Henley Business School, Advanced Diploma in Project Management - Cambridge University and is also a Graduate and Associate of the Institute of Chartered Secretaries and Administrators - UK. She is a board member of Henley Academic Board, Amref Health Africa and Sešego Cares.


Mary Ann Mackenzie Director, Amref Health Africa International Board

Mary Ann

Mary Ann MacKenzie is currently Vice President Relationship Management at CIBC Mellon Global Securities Company in Canada.  Prior to joining CIBC Mellon, she was Vice President, Strategic Account Management at Franklin Templeton and has spent most of her career in financial services in the Investment Industry.

Mary Ann attended Ryerson University, Toronto and has completed numerous financial services, sales and leadership courses.  She is the Board Chair for AMREF Health Africa in Canada.  Her charity work has included  multiple trips to Uganda to help build classrooms in villages and a climb up Mt. Kilimanjaro for the Make a Wish Foundation.  She spent several years on a Board for autistic children. Mary Ann received the Bruce McGowan Award Canada for Community Giving in 2010 and the Harmon Burns Global Award for Leadership and Community Giving in 2011.