This phone number is for Carolina Medical Center, Charlotte, NC. When someone I know was hospitalized there and called me this is the number that showed on the display. Perhaps this line is used by others making outgoing calls from there as well.
Caller ID only read the number 704-342-1143 but did not identify that this was a call from Carolina's Medical Center-Main, which it was. A friend of ours had been hospitalized overnight for an emergency surgery. Fortunately he left a voicemail.