Hospital is one of the strategic elements to improve the public health status. Therefore, a hospital needs a design or strategy to carry out a sustainable service process. One such care model is case management. This study aims atevaluating the implementation ofcase management programs at Central Public HospitalHaji Adam Malik Medan. This type of research is mixed-method research with a sequential explanatory design approach. The instruments used at the quantitative stage were demographic data, perception questionnaires of room nurses about the implementation of case management programs, and observation sheets for the implementation of case management programs. Meanwhile, at the qualitative stage, the focus group discussion (FGD) interview guides were used. This research had been conducted within two months.The samples were 46 nurses consisting of heads of rooms and team leaders. For the qualitative stage, there were 9 participants. The results based on the perception questionnaires showedthat respondents’major characteristics were educated with Nurse Profession Certificate (95.7%), female (100%), positioned as team leaders(69.6%), and had worked for 17—22 years (60.9%). Characteristics based on the observation sheets were educational background with NurseProfession Certificate (66.7%),gender of female (100%), and work experienceof 17—22 years (66.7%). The results of the questionnairesalso revealed that nurses’perceptions about the implementation of case management programswere good (87%). The results of the observations showed that the implementation of case management had been carried out well (100%). However, the activities were carried out orally, were not structured, and were not documented according to standards. The results of FGD obtained 4 themes, namely: 1) case management programs that have been carried out in hospitals, 2) obstacles in implementing the case management programs, 3) supporting factors for the implementation of case management programs, 4) future expectations for case managers.