What are the required Nurse Practitioner certifications?

Becoming a nurse practitioner involves advanced educational trainings and clinical procedures to that of a registered nurse. As per laws of the United States, it is mandatory to gain certification to be able to practice any healthcare related profession. Nurse Practitioner certifications can be acquired from each state or by American Academy of Nurse Practitioners (AANP) and American Nurses Credentialing Center (ANCC) for national certifications.