I'll say it again: any doctor that uses the force of their title to give credibility to a diagnosis without actually examining the patient is verging on malpractice.
This doctor crosses the line when he says "for sure:"
"From a distance, without formal evaluation there are still three things I know for sure regarding Hillary Clinton’s medical condition: 1) She has a neurological disorder; 2) pneumonia did not cause the episode on 9/11; and 3) she and her staff have been lying to cover up the truth of her condition for months if not years."
I'd be much more satisfied if he said, "She *appears* to be exhibiting symptoms of," or, "Personally, I have doubts."
Any doctor that purports to say something with "certainty" without examining the patient is bordering on quackery.