The Spanish have one of the most centralized health care systems in the world. Patients have no choice of provider and there is almost no cost sharing. Like most centralized systems without cost-sharing, there are significant waiting times for procedures. This has resulted in a 2 tiered system where 12% of the population receives higher quality care by purchasing private insurance.

The Spanish health care system is decentralized; health care is run independently by each of the regions (comunidades autónomas). Thus results in wide variations in health care spending and quality across each for the regions. The central government gives block grants to each region based on its population and demographics. These funds are raised from general revenues.