I have just received a letter from a collection agency saying that I owe for services provided on 8/22/2016. Apparently they never turned the bill in to my insurance, nor did they send me a bill. It says I owe one amount but they are willing to take half. Does that make sense? I tried calling Cornerstone . I let the phone ring at least 20 times and no one answered. I did this twice and this is a 24 hour hospital! Then I called CHI Memorial since they have bought Cornerstone. They told me that they have nothing to do with it, and they said to call Cornerstone. This time someone actually answered! But guess what. They told me that they have nothing to do with it either! But they do want my money. It looks like CHI Memorial is not going to do any better for Cornerstone than Erlanger did! If they can't answer phones, answer questions or do billing, do you want them operating on you? No me! I will go someplace else!