There are several areas of specialization in nursing and its evolving role in society as the world becomes more complex. Undoubtedly, this poses risks to both the practicing nurse and the public. In consideration it is necessary to take measures to protect the doctor, the patient and the general public. Overall, the Nurse Practitioner Association (NPA) has developed some guiding principles and regulations but they are not sufficient, so each state NPA has enacted tailored laws to protect its citizens and members. It is very essential for nurses to know the scope of the law which provides for a safe environment to practice their profession and also protect health and health.