On my floor we call most of the docs by their first name with a couple of exceptions. The docs that we call by their first names are the ones that are specific to our unit (neurosurgeons and neurologists) Other docs I just don't know well enough to call them by their first name. The other exception is that when talking to another doctor and referencing another ex.: ::speaking to a physician:: "His attending is Dr. M, pager number 0000, but you could speak with his resident Dr. A who is on the floor now" This goes for family as well....
So basically we call the unit docs by their first name when talking with other nurses on the unit or to the doc him/herself, anybody else gets the full ubbangi