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The nation is reaching a critical mass of HealthIT systems (EHRs, Data Warehouses etc) that comply with data and vocabulary standards. The wide deployment of HealthIT systems has created unique opportunities for providers, provider support teams, healthcare professionals and organizations etc. to access and use the patient data that is already collected during clinical workflows. In order to enable access to data,

DAF Phase 1 and Phase 2 focused on identifying standard Application Programming Interfaces (APIs) for accessing data within an organization (also called as Local DAF) and from trusted external organizations (also called as Targeted DAF) for treatment and payment purposesDAF Phase 1 and Phase 2 activities and artifacts can be accessed in the references page.

DAF Phase 3 on the other hand will focus on enabling researchers to access data from multiple organizations in the context of Learning Health System (LHS). The capabilities created as part of DAF Phase 3 are intended to be leveraged to build our nation's data infrastructure for a Learning Health System. DAF Phase 3 will leverage work that has been completed in DAF Phase 1 and Phase 2 as appropriate.

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