I doubt there was a facility in St. Nazianz - frankly, it isn't large enough. To this day there are still only a couple hundred residents of the community. To my knowledge there was never any medical facility unless the religious orders tended to people. I know there was a facility in Oshkosh that was at some point referred to as a 'sanitarium'. Kiel, Manitowoc, and Oshkosh were/are all within traveling distance - perhaps one of those communities?