> Why would you use a goyeshe doctor or plumber. There are heimish doctors, plumbers and sewer cleaners.
I think halakha is that you select the best doctor, and if they are about the same, go ahead select the heimeshe. There is often huge difference between good and average doctors. Also, if you patronize heimishe doctors without concern about their abilities, you will reduce competition and in the long term these doctors will have no incentive to become better doctors.