This study investigates the critical success factors for individuals’ use of business intelligence (BI) in health care organizations. We also examine the organizational impact of BI. We develop a model that expands DeLone and McLean’s IS success model to include task characteristics. To analyze the model, we used a mixed-method approach. First, a questionnaire was sent to BI users, which was completed by 746 respondents. In this step, we found that the expansion of the IS success model enhances the degree of explanation, such that user satisfaction and individual impact are better explained. Second, we investigated the organizational impact through semi-structured interviews. We identified two user types—system users and information users—and we found that BI is used for financial reporting, improving patient progress, and enhancing learning in hospitals. Future research should focus on the impact of tasks on IS success.