In recent years, the global growth of the economy contributed to the significant increase of tourism in the world, spreading its concepts in Brazil. There have also grown the related researches in the academic sector, as well as its concern with long life companies, growth in the Northeast region, globalization and other changes occurring in the short term. Thus, this work aims to present how a state among those with lower income per capita in the Federation, as Piaui, has a health care system in its capital which is a benchmark in Northeastern Brazil, influencing positively health tourism. The work deals with issues involving tourism as a product and service, having as a result the existence of a cluster of health in the city of Teresina with economic expression that justifies its importance as a generator of income, employment, science and technology and a promoter of sustainable development in that city.