Family Health Strategy (FHS) is the main gateway to the Brazilian National Healthcare System services which needs to be constantly evaluated for its improvement. Therefore, this correlational study aimed to evaluate the FHS, understanding the beliefs of the professionals involved, creating a new instrument and counting with a probability sample of 475 professionals. The new instrument composed by 24 items, with grading scale (0 to 10), has three factors. All of them were poorly evaluated by scores given by the professionals: (a) physical infrastructure (alpha = .84) got 4.37 (± 1.61); (b) material resources (alpha = .85), grade 5.42 (± 1.47); and (c) health care efficiency (alpha = .82) got 3.99 (± 1.35). It is concluded that the new scale is relevant, but there is also the need for changes in the barriers found in the operationalization of the FHS service.
Program Evaluation; Family Healthcare Strategy; professionals; beliefs