Weil Foot & Ankle Institute is a trusted, multi-state podiatry practice headquartered in Mount Prospect, IL. For more than 50 years we have been committed to improving the quality of life in a patient-focused environment by providing the most innovative and knowledgeable foot and ankle care available.Download Your New Patient Information‧Mountprospect‧Testimonials‧Why Weil‧Find a Provider/Location‧Conditions We Treat.