Evaluation of the effectiveness of Preferential Medicinal Providing is due to the need for rational pharmacotherapy for patients from certain categories of citizens. There are not enough technologies for such an assessment, which requires their creation and implementation.The purpose of the study. To develop the Integrative Scale for Evaluating the Effectiveness of the Program for Providing Certain Categories of Citizens with the Necessary Medicines on the model of the Far Eastern Federal District as an informative way to establish the effectiveness of the preferential segment of medicinal providing, to show the advantages of this Scale compared to other methods and to propose a set of measures to improve the effectiveness of the Program.Materials and methods. The results of the patient survey, compliance of the structure of purchased medicines with the regulatory framework and clinical recommendations of the Ministry of Health of the Russian Federation regulating Preferential Medicinal Providing were analyzed. The structure of the incidence of patients who were initially and repeatedly recognized as disabled.Results. Based on the analysis of compliance with the most important principles of medicinal providing, a technology for evaluating the effectiveness of the Program has been created that allows the participants of the Preferential Medicinal Providing, doctors, Health care organizers, specialists in the field of medicinal procurement, to carry out rational prescribing and purchase of medicines and it is advisable to allocate financial resources taking into account the priority of vital medicines.Conclusion. The Integrative Scale will contribute to improving the clinical and economic efficiency of the Program and will make a significant contribution to improving and maintenance the quality of life of patients receiving pharmacotherapy in the preferential segment, both at the level of the subject of the Russian Federation and at the level of the national system of Preferential Medicinal Providing.