This article analyses the impact of a potential deregulation Germany's pharmacy market by allowing foreign ownership of pharmacies and removing the limit of the number pharmacies that can be owned by a pharmacist. Based on a mathematical model and empirical values of foreign countries, scenarios for the German market are calculated and the impact on all participants of the health care system analysed. The key outcomes are:- A deregulation would enables the creation of pharmacy chains- In all simulated scenarios the total number of pharmacies would drastically grow- The increased pharmacy density improves patient centred drug care- The competition among pharmacies increases and leads to the closure of many independently owned and operated pharmacies.