Create FHIR based standards for 1) the exchange of validated healthcare directory information in a federated access environment based on the Validated Healthcare Directory standard localized for the US Realm using work completed for the PDex Plan Net FHIR IG and expanding support for FHIR endpoints, 2) query for FHIR endpoints from any federated directory instance, and 3) submitting attested information to the validated directory and verifying the information against primary sources.