Family medicine practices form the basis of the Croatian health system. They solve the largest number of health problems and collect the most health data with the lowest operational cost. It is important to notice a mutual understanding and trust between doctors and patients. However, the software support required for the running of these offices at the time being is still certified only based on the basic communication criteria, while all other important functionalities are generally uneven and left to the will of the producers. It is necessary to assess the quality of the software support. Today in the world, there are several measurement models, some of which are particularly prominent - the American certification programs and European framework model for certification and quality labeling of EHR systems. However, due to the fact that this area is rapidly changing and progressing, and that the health care of each country has its own peculiarities, the Croatian primary health care computerization process pointed a need for creating a new quality assessment model of software for managing family medicine practices presented in this work. Based on previous theoretical and experimental research in this area, the initial quality measurement model consisting of six basic categories was formed. According to this model, ??the questionnaire by which the Croatian family physicians evaluated the quality of the functionalities applied in their software support was made. Depending on the intermediate results obtained in the certain phases of the research, appropriate statistical methods that led to the final form of the new model were chosen. The strong ergonomic orientation of the new measurement model was particularly emphasized by further statistical analysis. Based on survey results, experiences and perceived limits, the set of recommendations which may contribute to solving of existing problems and improving functionalities of this sort of software support, was designed.