The best medical malpractice lawyers are those with some medical training, although they are very rare. If you can find one, expect their fees to be very high. However, most are worth every penny, because their knowledge makes them more convincing to the jury.
Medical malpractice fraud is, unfortunately, becoming more and more common. Don't be gulled into thinking it's a victimless crime: we all end up paying more for it, since doctors have to pay higher malpractice insurance rates, and that trickles down to all of us.