They are healthcare professional with advance degrees and they are nurses and their professional title  are university professors, research and development scientist, nursing agency business consultants, healthcare staffing consultants, and clinicians.  These healthcare professionals with advance degrees are Ph.D's and they are also called doctors.

They work for the healthcare industries such as hospitals, corporation with healthcare business, pharmaceutical industries, and for the goverment such as the CDC and NIH. The demand  for the Ph.D RN, nurses and their expertise are valuable.

Ph.D nurses are professors.

The need for four year RN are increasing and the hospitals prefers four year RN versus the associate RN.  Also, universities and colleges prefers Ph.D nurses as faculty educators. They have broad knowledge in nursing research and they integrate that nursing skills into the clinical setting.

Ph.D nurses, rn's are employed primarily by corporation with healthcare division or universities as research and product development. Also, some Ph.D nurses, rn utlize their expertise and start their own business such as nursing agency, healthcare staffing business, non medical and medical homecare or just consultants for the healthcare staffing agencies.