Personally, I haven't heard of it, but it appears to be part of a larger organization that isn't exclusively Christian. (Found this by going to About Us > Vendor Information on the page you linked, then BJC Locations on the page it linked to.)
Barnes Jewish Healthcare is a non-profit hospital system and runs a bunch of hospitals in and around St. Louis. I used to do work there on their acute care computer system. They are simply a great hospital system, not really faith based on any one religion.