The queuing theory and patient flow systems are often associated with simulation techniques. Simulation is a powerful tool for the evaluation and analysis of a new system designs, modifications to existing systems, and Proceedings of the International Conference on Industrial Engineering and Operations Management IEOM Society International proposed changes to control systems and operating rules. Simulation involves the methodology to provide the information from the model by observing the flow of the model using a digital computer. There are many studies conducted previously on the use of simulation techniques as a tool in the analysis of patient flow systems and queuing theory. A study done by Ismail, $(2010)$ reported that simulation model does improved patient waiting time for multi phases patient flow of obstetrics department in local specialist centre. This study used ARENA of systems modelling corporation to provide a complete simulation environment that support all steps in a simulation study. Simulation has an advantage over analytical or mathematical models for analysing complex systems since the basic concept of simulation is easy to comprehend and hence often easier to justify to management or customers than some of the analytical models. There are many commercial of the on$-$shelf software that can be used to develop a simulation model. The software package divided into six types: general$-$purpose software, manufacturing$-$oriented software, business process re$-$engineering, simulation$-$based scheduling, animators, and simulation support software. ARENA is graphical modelling or animation system that is based on hierarchical modelling concepts. It allows users to create new modelling objects called modules, which are the building blocks of model creation. It also offers Application Solution templates that can be used to tailor the software to a specific animation. Besides that, Arena also includes the input analyser, designed to give users the ability to read raw input data, and output analyser for simulation data viewing and analysis.