If I need medical care and that clause is paragraph 11 in the small print on the back of the patient check-in form, it's pretty doubtful I'll even notice that I agreed to it.
I'd love to see an example of how this gets used by doctors in the wild, to make it easier for me to protect myself against such absurdity.
That said, if my PCP asked and I had pressing medical concerns, I'd despise making the choice of 'free speech' versus 'need medical care', but I'd certainly choose the medical care.