A household /facility based cross sectional descriptive study was conducted in Yatta, Mavoko/Athi River and Machakos Central sub-counties where 383 proportionately sampled household heads provided indicator data collected through questionnaires. By combining the WHO/WB framework for monitoring UHC, and invoking the Wagstaff et al proposals of actualizing the framework, service coverage(SC) was established through geometric means of indicators of essential service provision(weighted preventive/promotive and weighted, treatment score), whilst financial risk protection(FRP) established through geometric means(weighted score) of incidence of catastrophic healthcare spending and the population that was impoverished by out of pocket healthcare expenditure. A geometric mean of SC and FRP was then calculated to give the UHC index.