In the hospital I signed Kitiger, RN, at the end of every entry. Working private duty in the home, I sign at the bottom of every page, and when I leave. Either way, it is easy to see who I am, so I use the pronoun, "I", when charting.
I do avoid using the client's name in the narrative most of the time. I say, "transferred to wheelchair", not "I transferred Johnny to the wheelchair." Why write in all those extra words, when we all know who transferred whom?