athenahealth FHIR Bulk Data Access API
FHIR Bulk Data Access ($export) for athenahealth — Group-level export operation that returns NDJSON files containing FHIR resources for all patients in a specified Group. Implements the FHIR Bulk Data Access (Flat FHIR) Export Implementation Guide and the FHIR Asynchronous Request Pattern. Required for 21st Century Cures Act compliance and is used for population-health analytics and EHI export workflows.