You may not like it, but there is nothing wrong...

...with the doctor, pretty much standard of care. In fact, you are defaming him just because you got stuck with medical bills. There is no health insurance will cover 100% these days.
And, your orthopedist did not make any money from "MRI" or "EMG". I am pretty sure about that. He only charged for his clinical evaluation. Remember, orthopedists make their living by working in the operation room, not ordering tests.