I have to say I’ve experienced treatment both w/insurance and w/out. When you don’t have insurance, they don’t treat you very well, limit time, attention and care. The cost is still very high, regardless.
When you have insurance, they are more inclined to perform tests.
In either situation, what I’ve noticed is that they tend to address the symptoms rather than treat. They will readily dispense meds and recommend surgery. They will not cure your problem or even really attempt to get at the root of the problem.