Have you given your That Dr your thoughts about his mouth and behavior? If not, go for it with both barrels. Mine have been mostly good except for one tha put a hole thru my left eardrum. Him I keep thinking should put me on his payroll via way of a lawsuit. Get your dad to a CCC and let them check =him out and as for the bad Dr, complain to the Hospital and licensing board of your state. I have been lucky like a lot on here. My Drs have been friendly and will explain anything you ask.