Authenticating with FHIR Server using an OAuth2 token

To call a FHIR server with an OAuth2 token, you typically include the token in the Authorization header of your HTTP requests. The token should be prefixed with "Bearer ".

Here's a general example of how you would structure an HTTP request:

GET /R4/Patient?name=John HTTP/1.1
Host: your-fhir-server.com
Accept: application/fhir+json
Authorization: Bearer [Your_OAuth2_Token_Here]

Replace [Your_OAuth2_Token_Here] with the actual OAuth2 token you have obtained. The specific endpoint, FHIR version (e.g., /R4/), and resource (e.g., Patient) will depend on the FHIR server you are interacting with and the data you wish to access.

This assumes you have already completed the OAuth2 flow to acquire a valid access token.