1upHealth FHIR R4 API
Core FHIR R4 REST API providing full CRUD operations on all HL7 FHIR R4 resources including Patient, Encounter, ExplanationOfBenefit, Observation, Medication, and more. Supports dynamic search, version histories, Provenance, and AuditEvent tracking in a HIPAA-compliant cloud. Authentication via OAuth 2.0 with client credentials and authorization code flows.