OBJETIVE: To know the perception of primary care professionals about the frequency with which interventions that should not be done at this level of care are carried out. MATERIAL AND METHODS: Three questionnaires were developed to evaluate 9 interventions in family medicine, 2 in pediatrics and 6 in nursing. The percentage of professionals who stated that they always or almost always carried out these interventions was calculated, considering acceptable percentages of less than 5%. A descriptive analysis of the barriers identified to reduce these interventions was also carried out. RESULTS: Five of the 9 interventions evaluated in family medicine, 2 in pediatrics, and 4 of the 6 in nursing were always or almost always performed by 5% or more of the professionals. Among the barriers identified to stop doing unnecessary interventions, the first was lack of time in the consultation, followed by lack of training. CONCLUSIONS: The results obtained have made it possible to identify which of the primary care interventions evaluated have the greatest room for improvement, as well as the main barriers to their deimplementation. Surveys of professionals make it possible to assess recommendations that cannot be measured from clinical records. Knowing their perception of their clinical practice can be very useful for designing the intervention plan.