“And if she sends you out for an MRI or Radiology or something, how will that work?”
Those are separate billing entities. The hospital or facility that the procedure was performed in will have their fees and quite often the specialist performing (or reading) the test will have a separate charge.
But won’t they require a “code” or something from the primary physician? Even if not, the patient would probably still have to have insurance to get the procedure done, unless they want to just get a big bill.