BACKGROUND: Quality service is a service based on Patient Center Care that requires the integration and coordination of various caring professions. Lack of communication, coordination, and collaboration of the caregiver and patient dissatisfaction can affect the quality of service, so the hospital needs to implement the strategy in improving the quality of inpatient installation, one of them is by using Case Management implementation. OBJECTIVES: To know the communication, collaboration, coordination and satisfaction of caregiver and patient satisfaction after implementation of Case Management. METHOD: This research is a qualitative research using Action Reaserch method. The tools used in the study using interviews. RESULTS: The results of the study showed that before the implementation of Case Management 3 of 4 Case Manager said that (the communication, coordination and collaboration) of the caregiver is still lacking, and not yet satisfied in providing services, and 3 respondents said they are not satisfied with the service in hospitalization . After the treatment of Case Management implementation, 5 of 6 Case Manager said (communication, coordination, and collaboration) were more than ever before, and were satisfied in providing services to patients in inpatient installation. As for respondents with patient satisfaction (case study of DM patients), 11 out of 15 patients said satisfied, 4 patients said less satisfied with the service. CONCLUSION: Implementation of Case Management conducted in inpatient installation can improve the quality of service (communication, coordination, and collaboration) of the caregiver as well as improve the satisfaction of officer in giving service to patient at inpatient, and give patient satisfaction during get service at inpatient installation purwokero Islamic hospital. Keywords: Case management,Case Manager,Collaboration