OBJECTIVES: Medical rehabilitation are measures following a medical treatment in order to improve health and recover quality of life. In the past, rehabilitation in Austria has been mainly conducted as inpatient care in hospital-like facilities. Nowadays, Austria tries to increase ambulatory rehabilitation, which allows a more flexible, cost-efficient treatment because patients can still go to work and stay at home overnight while not decreasing the medical outcome. However, this only works if patients live near to facilities. Therefore, locations and sizes of ambulatory rehabilitation facilities need to be carefully planned. METHODS: The idea of the Rehab Map is to provide a web application used by decision makers. It shows a map of Austria exhibiting the existing ambulatory facilities. By clicking on the map, the user can set new facilities in desired locations. Facilities can be filtered by medical indications. RESULTS: The application provides three types of results: First, the catchment areas from which facilities can be reached within 45 minutes, with different colors for existing and new facilities. For each municipality, additional information about distance and driving time to near facilities can be obtained. Second, the numbers of insured persons inside and outside catchment areas are analyzed by facility as well as nationwide, comparing the current and the planned situation. Third, treatment numbers for existing facilities and extrapolations for new facilities based on treatments in existing facilities and insured persons in catchment areas. All results can be exported as tables to serve as a rational basis for decisions. CONCLUSIONS: Commonly, analysts receive problem descriptions and provide possible solutions. With the Rehab Map, analysts provide a tool for decision makers to create their own solutions in a simple, intuitive way. This provides them with a deeper understanding of advantages and disadvantages of different scenarios.