Community health centres in Ghana have been established to improve access to healthcare services, particularly for underserved populations. However, their effectiveness and impact on clinical outcomes need further evaluation. A mixed-methods approach incorporating quantitative data from surveys and administrative records, alongside qualitative insights from focus group discussions. Statistical analysis will employ regression models to assess the impact of healthcare interventions on clinical outcomes. Vaccination coverage increased by 15% in communities served by enhanced health centres compared to those not receiving improvements (95% CI: [8%, 23%]). Patient satisfaction scores rose from an average of 6/10 pre-intervention to 7.5/10 post-intervention. The quasi-experimental design provided robust evidence for the effectiveness of community health centre upgrades in improving clinical outcomes and patient engagement, offering a replicable model for other regions facing similar challenges. Further studies should explore long-term sustainability and cost-effectiveness. Policy recommendations include prioritising investment in healthcare infrastructure and training local staff to maintain quality care. Community Health Centres, Ghana, Quasi-Experimental Design, Clinical Outcomes Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.