Abstarct: Awareness of patient satisfaction from service quality is vital to advance performance improvement strategies. The main goal to evaluate the quality of services in the health and treatment system is service performance, service identification, service performance improvement evaluation and finally providing favorable service to a large number of customers. In this research, firstly, with the consideration of experts and the study of the subject literature seven key aspects were identified to assess the quality of health care, then they weighted by the best-worst fuzzy developed method. In the following by using a researcher-made questionnaire, data from 384 people who have come to different departments of selected treatment centers, was investigated about quality of services. Finally, the complex of treatment centers, hospital departments and quality dimensions were analyzed and ranked by Fuzzy Vikor Method, Friedman statistical tests and Analysis of variance. Development of comprehensive satisfaction assessment model could include desirable range of criteria affecting the satisfaction of the referrers to health centers. In addition, using of developed multi-criteria fuzzy hybrid decision making, has been able to consider the uncertainty of the assessment process for the qualitative criteria considered by the evaluators. Key findings of the research suggest that the final weights in order of priority are: pivotal patient (0.198), time (0.188), effectiveness (0.178), responsiveness (0.123), warranty (0.112), financial (0.108), and health communication (0.9). Health centers by focusing on priority-baxsed performance improvement programs can offer a better level of service quality and can achieve to higher customer satisfaction. Therefore, they will be able to achieve sustainable competitive advantage.