Psychologists, pharmacists, dentists, PTs, optometrists, podiatrists, etc, etc. are all people who earn doctoral degrees and work around physicians. I do not care if people call themselves doctor or not (assuming they have a doctorate degree in the field of their practice) AS LONG AS the person is crystal clear about their role. Like, "I'm Dr. X, your psychologist", "I'm Dr. Y, the clinical pharmacist", etc.
No one complains about these other fields using their titles. I don't understand why the world explodes and suddenly we're all very concerned that patients may get "confused" when a nurse earns a doctoral degree, but apparently it's a huge problem.
This is coming from someone with no plans for a doctoral degree in nursing and will most likely go by my first name.