I have carried concealed at our local IHC hospital several times with no issues. A while back I had noticed the no weapons sign at the front door, but on my most recent visit in the last month, I could not see that sign any more. My wife is always telling me that I can't find things that are in plain view, so the sign may still be there and I just missed it, but hopefully it is not.
However, we had to take one of our children to the ER a few months back and there was still a sign by the ER admittance area about a place of healing, no weapons, blah, blah, but I know the law and I was not deterred. I have never seen any security personnel and I don't know if there are any here, but do worry about some whacked-out druggie coming in to a hospital so I will carry and protect my family regardless of any signs.