Context of the problem: the fragmentation of the health care systems affects the provision of health services. Objective: To describe the perceptions of health care professionals regarding the implementation of the health care network of Ranco Province, region of Los Rios, Chile. Justification: Professional perceptions are key to improving the network implementation. Methods: A qualitative exploratory and descriptive study based on semi-structured in-depth interviews to sixteen professionals. The information was analyzed through the content analysis technique. Results: the implementation of the assistance network improved the coordination for the provision of health services. However, there are differences according to the level of administrative responsibility concerning the strengths and weaknesses of the implementation. Conclusions: design gaps persist related to the health care reform that affect the implementation of the network.