Stichting HIV Monitoring (SHM) makes an essential contribution to healthcare for HIV-positive people in the Netherlands. Working with all recognised HIV treatment centres in the Netherlands, SHM systematically collects coded medical data from all registered HIV patients. SHM uses these data to produce centre-specific reports that allow HIV treatment centres to optimise their patient care and obtain formal certification. SHM’s data also form the basis for the yearly HIV monitoring report and are used in HIV-related research in the Netherlands and internationally. The outcome of SHM’s research provides tangible input into HIV care and prevention polices in the Netherlands.