HBHI has access to a set of proprietary and publicly available national registry data on physicians and nurse practitioners (OneKey; Physician Compare; NPPES; and others) and Hospitals (AHA; Medicare Cost Reports; and others).  We will discuss the structure of these data; our expertise in making these data more accessible for new projects; and ways we have linked these data with new and novel data sources to address healthcare challenges.  For example; we will discuss projects that use linkages to provider network data from Vericred and hospital transparency pricing data from Turquoise.