The aim of this article is to analyze the impact of the decentralization of the public national health system in Spain on citizens' satisfaction with different dimensions of primary and hospital care. Using micro-data from the Health Barometer 1996-2009 and taking advantage of the exogeneity of the different pace of decentralization across Spain, we find that, in general, decentralization has not improved citizens' satisfaction with different features of the health services. In fact, the only significant -though smalleffects found were of the opposite sign, i.e., a reduction in satisfaction as a result of decentralization, regarding the following aspects of medical care: assistance in the primary care centers, waiting time before consultation, ease of getting appointments, confidence transmitted by doctors and the number of persons per hospital room.