The usage of electronic health information exchange has increased exponentially over the past decades as physicians and their patients have come to expect rapid access to lab results, imaging studies and clinical notes. Snail mail was replaced by fax machines which is turn is being phased out by electronic health information exchange and patient portals. Patients now expect and prefer to conduct self-service activities such as registration and scheduling on their electronic devices. Healthcare Providers rely on real-time access to patient financial and clinical data. And all of these actions are dependent on highly performant identity engines that ensure the right people are seeing the right data related to the right patient. This session will explore the 4 foundational services of a healthcare identity engine: Identity Resolution, Identity Assurance, Authentication and Authorization/Consent. We will delve into the importance of these services and how each enables digital patient engagement.