This number is indeed the pre-admission testing for Miriam Hospital. I would not have answered the strange number but fortunately
my husband picked it up because they were changing the time of his test. Miriam and its associated doctors normally use the
exchange 793, not 427. His doctor's secretary also called from a 427 number. When I asked her why this was not the usual number,
she said that they like to disguise their number for privacy reasons! Maybe that means so that other family members will not know
that your doctor called? Well such a practice creates a real problem now for those of us who refuse to answer an unknown number!
Maybe when you call them, you have to use the 793 number.