The page at the above URL includes a drop-down selector to view either the DSTU2 (default) or R4 FHIR versions
of the API. This page also includes a link to obtain the “swagger” JSON file for the Patient Access
Patient Access API App Developers may now use the Practice Search page at https://www.nextgen.com/api/practice-search to see if a given Practice has installed and configured Patient Access API in their NextGen® Enterprise EHR system.
The FHIR-based NextGen Office YourHealthFile Patient Access API is for developers
creating Apps intended to empower patients with access to their own personal health data in a NextGen Office
practice via API.