Building a geo-analytic public health dashboard for tracking cancer drug deserts in U.S. counties

Access to life-saving cancer medications remains a significant challenge in many underserved U.S. counties, resulting in the emergence of “cancer drug deserts”—geographic areas with limited availability of essential oncology drugs. This review explores the design, implementation, and policy implications of a geo-analytic public health dashboard aimed at tracking and visualizing these disparities at the county level. By integrating spatial epidemiology, prescription databases, and demographic health indicators, the proposed dashboard leverages geospatial analysis to identify hotspots of pharmaceutical deprivation. The study examines key methodological approaches including spatial autocorrelation metrics (e.g., Moran’s I), hotspot analysis (e.g., Getis-Ord Gi), and multi-indicator access indices to generate actionable insights. A critical analysis of existing dashboards and healthcare GIS platforms is presented to inform best practices in user interface design, data interoperability, and real-time analytics. The review underscores the role of interactive dashboards in supporting evidence-based policy decisions, improving health equity, and guiding resource allocation for oncology care in vulnerable regions. Recommendations for integrating predictive modeling, stakeholder engagement, and national policy frameworks are proposed to enhance the system’s utility and sustainability. Keywords: Building, Geo-Analytic, Public Health, Dashboard, Tracking, Cancer Drug Deserts, U.S. Counties.