"You want to know who's a real medicine man? He's the one who doesn't say 'I'm a medicine man.' He doesn't ask you to come to him. You've got to go and ask him. And you'll find he's always there among his own people."
Louis Farmer Onondaga
And when you ask him he will say he is just a common man :)
Yep. One told me about how the medicine men, way older than him (he was in his 70's), healed him up. They must have been in their 90's.