This study examines how to increase customer engagement of BPJS Healthcare so that further can increase Brand Loyalty. This research is based on the idea that good customer engagement is the beginning of success in achieving Brand Loyalty. Customer engagement is measured by five dimensions; enthusiasm, attention, absorption, interaction, and identification. In this study, brand trust is also used to mediate the relationship between customer engagement and Brand Loyalty. This study used 216 BPJS Healthcare participants from six Islamic hospitals in Central Java. The sampling method used was purposive sampling, with the criteria for Muslim who were adults and had used BPJS Healthcare for inpatient and outpatient care in BPJS referral Hospital. The results showed that enthusiasm, attention, and absorption had a significant effect on Brand Trust. Meanwhile, Interaction and Identification do not affect Brand Trust. Brand loyalty is influenced by Enthusiasm, Interaction, and Brand trust. Meanwhile, attention, absorption, and identification do not affect brand loyalty. Thus, the dimensions of Customer engagement that can directly influence brand loyalty are Enthusiasm and Interaction, while those that affect indirectly through brand trust are Enthusiasm, attention, and Absorption. Keywords: Brand Loyalty, Customer Engagement, Brand Trust, BPJS Healthcare