Nnenna has over a decade of experience in public health in Nigeria and the Africa region, covering programme management, evaluation, organizational development, capacity building, health systems strengthening and community-based health insurance.
In the course of her career, she has managed national level, donor-funded programmes and covered 30 states of Nigeria and several countries in the Africa region. Her work experience includes lecturing in Health Management, Planning and Development with the College of Medicine, University of Lagos Nigeria. In addition, she worked as a Senior Reproductive Health Advisor with Family Health International, leading the reproductive health – HIV integration efforts and other initiatives. She has also functioned as the Insurance Operations Manager for PharmAccess Foundation, overseeing community schemes with over 100,000 enrollees.
Nnenna has provided technical assistance as a consultant to different national and international organizations, as well as government structures/institutions including: the National Agency for the Control of HIV/AIDS (NACA), several State Agencies for the Control of HIV/AIDS (SACAs), United Nations Development Programme(UNDP), Ford Foundation, Abidjan-Lagos Corridor Organization (ALCO), Partnership for Transforming Health Systems 2(PATHS2), American Jewish World Service, Family Health International, AED SMARTWork, Management Strategies for Africa (MSA), among others.
In addition, she has contributed to the development of various national and state strategic documents and service guidelines. She serves on the board of directors of InSiGHt and functions as the Principal Consultant for IHC.