Community health centres in South Africa play a crucial role in providing primary healthcare services to underserved populations. A mixed-method approach was employed, including quantitative data collection via self-reported questionnaires and qualitative interviews to understand staff perceptions and service delivery effectiveness. Randomization ensured fair comparison between intervention and control groups. Significant improvement in resource utilization efficiency (p < 0.05) was observed with an average reduction of 20% in resource wastage, indicating a clear trend towards more efficient use of funds and staff. The randomized field trial demonstrated that targeted interventions can significantly enhance the operational efficiency of community health centres. Implementing evidence-based resource optimization strategies is recommended to sustain these gains and further improve service delivery. Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.