West Africa Global Health Leaders Fellow, Centre on Global Health Security
Ritgak Tilley-Gyado
Contact information
+234 816 872 7962


Ritgak has a decade of experience in public health programme delivery, research and innovations. Her research at Chatham House explores the role of private industry in public health emergencies.

Ritgak is a technical adviser to Nigeria’s minister of health. From 2013, she worked at the World Bank in Nigeria on government’s results-based financing for primary healthcare. She was strategist and curator at the Private Sector Health Alliance, driving the growth of a marketplace for healthcare innovations and social enterprises. Ritgak has worked on various initiatives including the Informed Decisions for Action to Improve Maternal and Child Health project, Participatory Ethnographic Evaluation and Research on Female Genital Mutilation and HIV/AIDS projects. She’s author of the World Bank case study, When Institutions Work: Nigeria’s Ebola Response, and has co-authored several peer-reviewed publications.

She is a doctor of Medicine with a Master’s in Culture and Health from University College London.


  • Results-based financing                             
  • Primary healthcare systems            
  • Qualitative/operational research
  • Social innovation/entrepreneurship
  • Programme management


Jan 2016 -Technical Adviser To The Honourable Minister Of Health, Nigeria

Lead Strategist & Curator, Innovation, Private Sector Health Alliance of Nigeria

2013-15Health Systems Specialist, Nigeria Country Office, World Bank
2010-13Principal Associate, Health Hub Ltd, Abuja, Nigeria

Technical Associate, Management Strategies for Africa - Accra, Ghana

April-Dec 2009; Dec 2006 - Aug 2007

Technical Lead, HIV/AIDS Prevention Unit, Winrock International, USAID/AIDS Impact Mitigation Project; Program Associate - Abuja, Nigeria


  • Tilley-Gyado. Dimka R. (2015) When Institutions Work: Nigeria’s Ebola Response. Doing Development Differently (DDD): A Pilot for Politically Savvy, Locally Tailored and Adaptive Delivery in Nigeria. World Bank
  • Marchant, T., Tilley-Gyado, R. D., Tessema, T., Singh, K., Gautham, M., Umar, N., Armstrong Schellenberg, J. R. (2015). 'Adding Content to Contacts: Measurement of High Quality Contacts for Maternal and Newborn Health in Ethiopia, North East Nigeria, and Uttar Pradesh, India'. PLoS ONE,10(5), e0126840. doi:10.1371/journal.pone.0126840
  • Spicer N, Bhattacharya D., Dimka R., Feleke Fanta, Mangham-Jefferies L., Schellenberg J., Tamire-Woldemariam A., Walt G, Wickremasinghe D. (2014) 'Scaling up is a craft not a Science: Catalysing scale-up of health innovations in Ethiopia, India and Nigeria'. Soc Sci Med 2014 Nov 28;121:30-8. Epub 2014 Sep 28.
  • Dimka R. and Dein S. (2013) 'The Work of a Woman is to give Birth to Children: Cultural Constructions of Infertility in Nigeria'. African Journal of Reproductive Health, June 2013; 17[2]:102-117