Prior to forming the Foundation, he was co-founder of PMSI and Walsh International, leading providers of information services to the healthcare industry. Both Walsh and PMSI later went on to become listed on the NASDAQ stock exchange. It was while he was working so closely with some of the most powerful names in the healthcare industry that he had the idea of creating the Access to Medicine Index.
In the knowledge that some two billion people in developing countries have no access to affordable medicines, he decided to develop a ranking that would clearly show what the major pharmaceutical companies were doing to make their medicine available to these people. The aim of the Index is to stimulate positive change by publicly encouraging pharmaceutical companies for their efforts and rewarding them for improvements. Wim is a regular speaker on this topic at conferences and other events.