We have great news for you!
You now have access to the Medicare Advantage Optum Formulary API.
The Optum Formulary API link is here. https://fhir.shn.flexorx.optum.com/R4
Client ID: 2cbe7797-e386-4622-867c-ddc21d0b5e7a
Client Secret: ca95cfb3-1dea-40dd-937a-42065fc570e9
This is sensitive information, so please ensure that it is kept safe.