If anyone is curious, according to 1up Health:
Apple Health via Healthkit recently introduce the ability to pull individual patient health records from hospitals and clinics using the same FHIR functionality as 1upHealth. (Note that Apple Health does not support all the health systems supported by 1upHealth) That patient data is stored on the device and does not natively support a cloud or RESTful API experience. That is a limiting experience because you cannot query your patient data across populations or for specific items within their medical record. To enable a cloud based functionality, you can push the FHIR healthcare records from the user's device to 1upHealth and store it in our cloud backend enabling your applications to interact with the data in a RESTful manner. Star by creating a free 1upHealth developer account. Then follow the other steps below.