Health authorities in Thailand implemented a policy especially to cope with chronic diseases in that they transformed former health stations into sub-district health promoting hospitals (SHPH). The “top down” measure left the staff of the SHPH somewhat confused and uncertain how to manage their duties effectively. One of the weak points was the questionable outreach of care into the community. In an attempt to demonstrate how to enhance community participation, one SHPH was selected and assisted in improving the care of type 2 diabetes mellitus (T2DM) patients. Patients from another SHPH served as controls. The combined efforts of patients, their families, SHPH staff, and the community with the help of village health workers succeeded in improving the control of T2DM in that a steady decline in capillary blood glucose (CBG) could be observed and the results could also be verified by the determination of glycated hemoglobin (HbA1c).