Provider authenication Practitioner _id?

[Michael Spohnholtz WA-Seattle]

For Authorization-type Provider, after the oauth2 authenication, how do you "discover" the Practitioner's "_id" of the logged in user?  Fhir Practitioner resource does not allow searching by the users's login name.

[Michael Spohnholtz WA-Seattle]

Specifing the scope "fhirUser openid user/Practitioner.read" provides in the decoded access_token:

"fhirUser": "Practitioner/53806927"

[Aaron McGinn (Oracle Cerner)]

You are correct! The token claims will have the Practitioner reference valued under the fhirUser key.

https://fhir.cerner.com/authorization/#identity-scopes-openid-and-fhiruser

https://hl7.org/fhir/smart-app-launch/2021May/scopes-and-launch-context.html#scopes-for-requesting-identity-data

-Aaron (Oracle Cerner)