This study aims at identifying the notion of Post-Occupancy Evaluation (POE) pertinent to the performance of three general hospitals constructed inside the Sulaimani City, tracing the relationship between the quality of the indoor environments and medical staff (doctors and nurses) satisfaction level. Using some indoor environment elements in the right way will positively influence the mood, stress level of the medical staff, and patient recovery as a result. The POE toolkits (AEDET and ASPECT) have been implemented on targeted wards at the selected hospitals. AEDET and ASPECT questionnaires were distributed among 152 medical staff to obtain their perspectives. In total, 112 valid questionnaires were received. The medical staff at tested hospitals were generally satisfied with the quality of newly built hospitals' indoor environment. The results have shown that exploring medical staff experiences can expose factors that affect their satisfaction levels. Also, the findings reveal that the building's physical quality can be vastly related to the fulfillment of the medical staff's satisfaction. Moreover, the findings underline the role of the quality of the indoor environment in increasing medical staff's satisfaction levels, informing design decisions. Additionally, the persuasive associative outcomes have proven that POE (AEDET and ASPECT) will be pertinent as a tool to the building's physical quality.