ABSTRACT Objective to identify outcome indicators of the multi-professional Diabetes Mellitus care of a reference outpatient service. Method a descriptive study of evaluative nature, according to the health evaluation framework, carried out by documentary analysis of 173 medical charts, from August to October 2018. The variables were analyzed in the Statistical Package for the Social Science (SPSS), version 22.0, by descriptive statistics, as well as the association of variables, with the Chi-square, Mann-Whitney, and Wilcoxon tests being used, considering p-values ≤ 0.05 as statistically significant. Results predominance of older adult women, with a mean diagnosis time of 11.9 years. The tracking of complications due to Diabetes Mellitus occurred in 90.2% of the users, with a prevalence of 68.2%, of which 34.7% were diagnosed in the service. Absenteeism was 21.4%. The systolic and diastolic arterial pressure and total cholesterol parameters were in line with the proposed goals, while glycated hemoglobin (A1c), fasting glycaemia, HDL-c, LDL-c, triglyceride fractions, and BMI did not reach the target range. There was a significant reduction in final A1c, comparing to initial A1c, as well as an increase in the proportions of users who reached the goals in glycemic control. Conclusion a significant improvement in glycemic control, despite the fact that the parameters did not fully meet the goals, ratifying the importance of an effective assistance model for successful care strategies of Diabetes Mellitus.