In collaboration with Firefly Health, we developed a custom web application featuring an interactive map that displays lab, retail, and care centers within specified zip codes. The project involved preparing and converting a dataset of over 17,000 geocoded addresses into a line-delimited GeoJSON format. Using Mapbox GL JS and Mapbox Studio, we created a fully interactive map with searchable zip code functionality and dynamic popups for detailed location information. The final product was an iFrame-compatible map that embedded into existing Firefly's content management systems. Comprehensive documentation and the complete codebase were delivered via GitHub.