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FHIR Layer Exchange Release Notes

Optum Physical Health California

August 26, 2026 - Release 4.5

A. New and Improved

a. Access Management

i. Admin Portal

1. No Functional changes but the Flex portal will now be available on new URL- https://flexinterop.optum.com/ophca/portal/homepage

ii. Vendor Portal

1. No Functional changes but the Flex portal will now be available on new URL- https://flexinterop.optum.com/ophca/portal/homepage

iii. Member Portal

1. No Functional changes but the Flex portal will now be available on new URL- https://flexinterop.optum.com/ophca/portal/homepage

iv. Authorization/Authentication

1. No changes in this release

b. Framework

i. FLEX Server

1. No changes in this release

c. Patient Access APIs

i. Patient Claims

1. No changes in this release.

d. Public Directory APIs

i. Provider Directory

    a. HealthcareService Resource Enhancements

Expanded _Include Parameter Support: The _include parameter has been enhanced to support searches  related to HealthcareService:organization, enabling users to easily retrieve related resources referenced by the primary HealthcareService resource being searched.

    b. Location Resource Enhancements

Expanded _Include Parameter Support: The _include parameter has been enhanced to support searches related to Location:organization, enabling users to easily retrieve related resources referenced by the primary Location resource being searched.

ii. Provider Directory new endpoints

Provider Directory public resources are now available on new endpoints provided in the table below, Old URLs will not be supported hereafter.

  Resource

  Old URL

  New URL

Practitioner Role

https://flexinterop.optum.com/fhirpublic/oph/ca/R4/PractitionerRole

https://flexinterop.optum.com/ophca/fhirpublic/R4/PractitionerRole

Practitioner

https://flexinterop.optum.com/fhirpublic/oph/ca/R4/Practitioner

https://flexinterop.optum.com/ophca/fhirpublic/R4/Practitioner

Location

https://flexinterop.optum.com/fhirpublic/oph/ca/R4/Location

https://flexinterop.optum.com/ophca/fhirpublic/R4/Location

Healthcare service

https://flexinterop.optum.com/fhirpublic/oph/ca/R4/HealthcareService

https://flexinterop.optum.com/ophca/fhirpublic/R4/HealthcareService

Organization

https://flexinterop.optum.com/fhirpublic/oph/ca/R4/Organization

https://flexinterop.optum.com/ophca/fhirpublic/R4/Organization

Organization Affiliation

https://flexinterop.optum.com/fhirpublic/oph/ca/R4/OrganizationAffiliation

https://flexinterop.optum.com/ophca/fhirpublic/R4/OrganizationAffiliation

Insurance Plan

https://flexinterop.optum.com/fhirpublic/oph/ca/R4/InsurancePlan

https://flexinterop.optum.com/ophca/fhirpublic/R4/InsurancePlan

Network

https://flexinterop.optum.com/fhirpublic/oph/ca/R4/Organization?_profile= http%3A%2F%2Fhl7.org%2Ffhir%2Fus%2Fdavinci-pdex-plan-net%2FStructureDefinition%2Fplannet-Network

https://flexinterop.optum.com/ophca/fhirpublic/R4/Organization?_profile=
http%3A%2F%2Fhl7.org%2Ffhir%2Fus%2Fdavinci-pdex-plan-net%2FStructureDefinition%2Fplannet-Network

 

e. Bug Fixes

a. No known defects at this time.

f. Known Issues

a. No known issues at this time.