Who called from 7342320000

This number is in my call history. Don't remember receiving a call.

called me at 2:15 EST in NJ, no message, just annoying b/c I keep receiving these random number calls...

called at 1:32pm EST - in Detroit area....no message

This is a generic University of Michigan outgoing number. It is someone calling with U of M's internal phone network.

I'm confirming that it's a number from the University of Michigan hospital. My nurse calls me weekly from this phone number.