While FHIR officially supports XML and other formats, JSON is the lion’s share of the work. “Bulk FHIR” uses the format NDJSON as a way to store information. Videntity would like to announce updates to the JSON Data Tools package that facilitate NDJSON upload to MongoDB and FHIR servers. It can also convert FHIR Bundles to Bulk FHIR. For more information see https://github.com/videntity/json-data-tools/.