I rec'd several calls from this number.  Sounds like an incoming fax.  I called it and # is the Virtua Hospital Switchboard.  I was told any call from the hosptial will display that number on you caller id and there is no way to figure out what extension is placing the call.  The receptions was not very sympathetic.

Summit Surgical - Virtua in regards to surgery schedule

The voicemail I get is actually from my Dr's office For some reason it comes through as Virtua's number