I disagree. I've had more medical visits in the past year than the rest of my life combined. Many offices / Drs. use other hospitals for routine things.
For instance, my MRI that I had at one place resulted in a charge from another hospital because the doc who actually read the results was from there.
Another instance, my physical therapy from a local joint in Gahanna came through as a bill from a different place, because they're affiliated with the other hospital.