It could give patients control over their own data.
A vexing problem facing health care systems throughout the world is how to share more medical data with more stakeholders for more purposes, all while ensuring data integrity and protecting patient privacy.
Traditionally, the interoperability of medical data among institutions has followed three models: push, pull, and view (discussed below), each of which has its strengths and weaknesses. Blockchain offers a fourth model, which has the potential to enable secure lifetime medical record sharing across providers.
Source/More: The Potential for Blockchain to Transform Electronic Health Records