This paper survey the contributions and applications of queuing theory in the field of
healthcare. The paper summarizes a range of queuing theory results in the following areas:
waiting time and utilization analysis, system design, and appointment systems. The paper also
considers results for systems at different scales, including individual departments (or units),
healthcare facilities, and regional healthcare systems. The goal is to provide sufficient
information to analysts who are interested in using queuing theory to model a healthcare process
and want to locate the details of relevant models.