It is not an insurance network. It is this hospital system linking to that one and this medical foundation (a large group of doctors) system linking to another hospital. I watched the doctor / nurse navigate their systems.

If I left the state, doctors elsewhere probably would not have access like this. But I do not know for sure. Depends on if there is an umbrella corporation above the hospital or medical group. Like everything, when there is $$$, it gets bigger and bigger.

Here is one example: dignityhealth.org/ourlo… now crosses state lines.