We have had some great doctors here, and some medi...

We have had some great doctors here, and some mediocre doctors here. The thing that is so frustrating, though, is the billing. As cash payments, we pay coming in and going out for appointments, what on Earth are we receiving a bill for months later? When calling to ask about billing, there is no streamlined way to find out if what it is for.
It's horrible to make parents of chronically I'll children have to endure the extra stress of your billing department.