This study aims to: (1) Explore the benefits, dilemmas and challenges of applying blockchain technology to health data governance; (2) Explore the actual impacts of applying blockchain technology to health data governance. This study applies the perspectives of organizational governance as well as technology to achieve the research objectives. Case studies and in-depth interviews were conducted to grasp the possible changes and formulate strategies early. The results of the study indicate that different levels of organizations apply blockchain technology to health data governance, which generate different benefits, they will also face dilemmas and challenges accordingly. Furthermore, the implementation of blockchain technology can make breakthroughs in health data governance and technology management of the global medical industry, and drive the expansion of medical blockchain ecosystem. It also offers numerous opportunities for usage in the healthcare sector, e.g., in public health management, user-oriented medical research based on personal patient data as well as drug counterfeiting. These advances also pose significant data governance challenges for ensuring value for individual, organizational, and societal stakeholders as well as individual privacy and autonomy.