To determine the effectiveness of a case management model for approaching multi-pathological people in a health promoting entity of the contributory healthcare scheme in Bogotá, Colombia between 2018 - .Mixed methods research.The study contemplates two components: a quantitative component using a quasi-experimental analytical design before and after longitudinal intervention to determine the effectiveness of the case management model and a qualitative descriptive design to understand the experience of the participants about the model. The Administrative Department of Science, Technology and Innovation of Colombia (Colciencias) funded this project by means of call 777-November 2017, under the financing agreement No. 848-December 2017.Addressing problems deriving from the structure of the Colombian healthcare system is crucial for implementing case management models. Furthermore, the effectiveness of such models may be affected by power relations and market failures, but the proved potential of a model may represent a generalized benefit for the Colombian health system.In Colombia, considering complications and management of chronic non-communicable diseases as isolated cases is considered as the highest cost events in healthcare provision, since an average of 12.8 million pesos is invested in each patient. This has led to rethink the management in these patients by means of a comprehensive model that guarantees the effectiveness of healthcare delivery, in the framework of a healthcare system heavily affected by payment capacity, where the market has a strong predominance, such as the case of Colombia.RPCEC00000293.