Background and Aim: Accreditation is one of the evaluating health care organization tools especially in hospitals and is also one of the priorities of Ministry of Health in Iran. The aim of this study was to examine the impact of accreditation on health service delivery in hospitals from perspective views of experts.

Materials and Methods: This qualitative study was conducted by semi-structured interviews and opinions of 12 experts at Isfahan University of Medical Science in the field of hospital accreditation in 2012. After transcription of each interview, content analyses was used to minimize and structuring qualitative data.

Results: According to this study, 10 main theme and 72 sub- themes were identified. Main themes included: Necessity, implementations priorities and mechanisms of Accreditation effect, accreditation impact on service quality and organizational performance, patient satisfaction, commitment and job satisfaction of staff, reducing factors the impact of accreditation, confounder factors the effect of accreditation and the executive proposals in order to implement accreditation program in Iran.

Conclusion : Accreditation could be properly implemented through setting Conditions, selecting the appropriate accreditation model, justify stakeholders about the necessity of accreditation, monitoring, establishment of appropriate information systems, information transparency and changing the general attitude of the organization. It would take positive effects to achieve hospital goals and improve the quality of services.