Stefan works as clinical physician and transplant officer at the University Hospital Essen. He specialised in internal medicine, nephrology and diabetology. He completed postgraduate business studies at The Open University (UK). As head of the Institute for Drug Safety at the University Hospital Essen his research activity focuses on the development and evaluation of novel strategies to improve drug-therapy and –safety. He rolled out one of the most popular and best studied mobile applications in the field – the “iNephro Medication Plan”. Furthermore he chairs the commission “Digital Nephrology” of the German Society of Nephrology and is founder of the MEDICA eHealth Venture summit (http://evs.ehealth-syte.com/).