Many policymakers are giving huge attention toward medical errors that affect patient safety improvements by redesigning the delivery of healthcare system and methods and preparing plans for any inevitable errors that might occur in future as these errors often lead to adverse healthcare events and could be considered as the leading cause death. The incidence rate of medical errors were not well known until many countries have reported in 1990s that a lot of patients have harmed and died by medical errors they faced. The most reported medication errors were: wrong dose, delayed medicine or treatment, and wrong medicine taken. (Patrick A. Palmieri, 2008). In Saudi Arabia a lot of medical errors incidences were reported which were one of the