This is just me...
I never let on that I am an RN whether I'm in the Dr's office or the hospital. I prefer to be just a patient (or just a husband, when my wife was giving birth to our sons
Now if I received bad care (doc or nursing) I would say something.
I work in a walk in clinic and do triage/intake on over 100 patients in a shift. I always begin the triage with "how can we help you today" or "what brings you in today?"
Sometimes the FIRST thing a (nurse) patient will say is "I'm a nurse." My response is ALWAYS (with a smile): "So am I, what seems to be the medical problem today?"
being a nurse (or doc, or CNA, etc.) has no bearing on your visit/hospital stay. If it comes up in conversation, then so be it. BUT DON'T THROW IT IN MY FACE!
stepping off my soapbox...