Health service credentials are important because they can improve the quality and profitability of health care facilities. Performance improvement through structured credentialing needs to be carried out continuously to support the quality of health care facilities, both in terms of skills, knowledge, and behavior in the work environment. Evidence-based implementation of credentials to support the quality of health services needs to be reviewed further because science and technology are increasingly developing. A series of selection went through 1705 publications and 639 publications meet the desired criteria in Scopus Database (Publications from 2011-2021 using keywords: ‘credentialing’ AND ‘quality’, and within medicine-related field of study). The data then being analyzed using VOSViewer to form whole 4 clusters. The majority of studies was held in America. Most citated publications are about standardization of medical processes. Throughout cluster themes assessed, the main topic of the publications was described as such: Standardization actions, and credentialing team programs. Future reviews with similar approach are needed to further expand new ideas to improve healthcare service quality.