This study examines the expansion of health insurance coverage among the urban population in Accra, Ghana, focusing on the period from to . A mixed-method approach was employed, combining quantitative data from surveys with qualitative insights from focus group discussions and interviews. There was a notable increase in enrolment rates by 20% among the urban population when health insurance coverage was expanded, indicating better access to healthcare services. Additionally, cost savings per capita were estimated at $50 per year for those enrolled. The expansion of health insurance significantly improved healthcare access and affordability for urban residents in Accra, Ghana. Public health policymakers are encouraged to replicate this model in other underserved areas within the country. Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.