Credentialing is a process to achieve the standard as an effort to promote patient safety. The doctor must have a good competency and accountability so they can provide professional and high quality services. There was no clear study and evaluation at hospital in yogyakarta regarding the sustainability of the credentialing process from the beginning, especially for general practitioners. Analyze the implementation of credentialing of general practitioners and the outcomes resulting from the implementation of credentialing at hospital in yogyakarta. Researcher used a case study design with descriptive qualitative approach. Researchers used qualitative research to obtain descriptive data in oral and written form. This research was conducted at hospital in yogyakarta in June 2018. The credentialing process at the Hospital were often confused with the employee recruitment process. Implementation of credential process, written clinical authority, professional development, audit system, professional discipline and sanctioning reflect a better performance of the medical committee. Evaluation for the future is in line with the credential model "delineation of clinical privilege". This model is based on the credential triangle process consisting of clinical privileges, white papers, and peer groups, with the output is clinical appointments. The system of credentials in hospitals used "delineation of clinical privilege" model was very possible to be implemented because various elements that were needed have been found in the medical profession in Indonesia. Keyword : Credentialing. Primary Physician, At Hospital