Nurse practitioners sue state over right to use 'doctor' title.

The article discusses about lawsuit by three nurse practitioners in California, U.S. who hold doctorate degrees (DNPs) against the state's law that restricts the use of the title "doctor" to physicians. It discusses lawsuit raises questions about the first amendment rights of nurse practitioners to use the title; and the ongoing debate over scope of practice between medical and nursing organizations, as well as lawmakers' attempts to clarify roles and designations in the healthcare field.