Quality Function Deployment (QFD) is being used as an improving method in MMS and as a guideline in highlighting the weak points in the erformance and finding the suitable procedures to overcome them to achieve the customers satisfaction. Medical devices can be categorized as critical and non critical; the critical device is the one whose failure causes big loss in the services efficiency and the non critical is the one whose failure causes moderate loss in the services efficiency. Through this research, the performance of Medical Devices Maintenance Systems (MDMS) in Prince Hamzeh...