Building of healthcare facilities are considered to be complex owing to uncertainty attached to the nature of these types of projects. Feasibility study through design and construction figured out that many intricate factors should be considered by project managers to make healthcare projects successful. Multiple building components and systems, diverse stakeholders’ needs, progressive healthcare technology, specialized functions, different financing methods, and particular building codes and regulation make managing of healthcare facility construction a challenging tasks for project managers. Therefore, understanding the criteria for successful delivery of these types of projects is critical for project managers. Although, evaluating success factors of general construction projects has attracted attentions in recent years, no research has addressed specific nature of healthcare construction projects. This paper aims to identify success factors of healthcare facility projects by interviewing practitioners who have substantial experience in construction of health care facilities in Iran. The qualitative nature of the study gives an opportunity to experts to reveal their insights about projects success factors through open-ended interviews. The result can be used by project managers as a guideline to handle healthcare construction projects successfully.