The use of the Mobile JKN application is a crucial part of the digital transformation of healthcare services because it can facilitate access to services for JKN participants. However, the use of this application is influenced by several factors, including system quality, information quality, and service quality. This study used quantitative methods with a cross-sectional design. The sample consisted of 397 outpatients selected using purposive sampling. Data were collected through questionnaires and analyzed using univariate, bivariate, and multivariate analyses. Chi-square test results indicate that the independent variables—system quality, information quality, and service quality—significantly influence the use of the Mobile JKN application, with p-values of 0.001 for each. Multivariate analysis reveals that information quality is the most influential variable in this study (OR = 63.835), followed by service quality (OR = 8.672). It can be concluded that the better the system quality, information quality, and service quality, the higher the utilization of the Mobile JKN application. Therefore, Medan Haji Hospital and BPJS Kesehatan need to improve the quality of information and strengthen outreach and education on the application's use to optimize Mobile JKN utilization.
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