Redis can help build a healthcare provider finder by utilizing its geospatial capabilities and the Search and Query module, which provides a rich query capability that allows for flexible searching with features like location-based searches, tag-based searches, and more. With Redis, patients can find healthcare providers near them based on their location, and the system can handle complex queries to filter results based on specific services offered by each provider. The Search and Query module is flexible enough to handle various operations, such as name and name prefix search, sound-alikes names, and street names, making it suitable for building a comprehensive healthcare provider finder application.