After analyzing the three models, and comparing all three using a paired-t test, we found out that the results of the modifications to the base model were statistically significant. We conclude that the second alternative model was the best solution for the problem (number of patients waiting in doctors' queues and the front-desk's queue); Model three provides the smooth processes that take place in both doctors' queues and the front-desk's queue as well. Model two doesn't reduce the average waiting time significantly. However, model three shows good results regarding to the average waiting time for patients waiting in most queues.