Background Multidisciplinary interventions may be useful for children and adolescents with diabetes mellitus (DM), especially in areas where new blood glucose monitoring and control technologies are difficult to access. Methods PAANDA, a care program for adolescents and children with diabetes, was implemented in patients aged 0 to 18 years and 11 months. The effect of the intervention was determined by self‐blood glucose monitoring (SBGM) and glycosylated hemoglobin (HbA1C) levels at start and after 6 months. Results A total of 121 patients with DM were evaluated, mean age of 14.27 years (SD: 4.60 years). Blood glucose measurements in range (70‐120 mg/dL pre‐prandial or 70‐180 mg/dL post‐prandial) increased by 20.67% before breakfast, 8.14% after breakfast (both P‐value