Health financing is a core necessity for sustainable healthcare delivery. Access inequalities due to financial restrictions in low-middle income countries, and in Africa especially, significantly affect disease rates and health statistics in these regions. This paper focuses on the role of a national health insurance cover as a funding medium in Nigeria, highlighting the theoretical premise of health insurance, its driving forces, key benefits and key limitations particular to the country under scrutiny. Emphasis is laid on its overall effect on the pressing public health issue of health inequality.