A nurse practitioner (NP) needs four core credentials: an active registered nurse (RN) license, a graduate degree in nursing, national board certification in a specialty population, and a state license to practice as an advanced practice registered nurse (APRN). Each layer builds on the one before it, and all four must stay current throughout an NP’s career.
Starting Point: RN License and Bachelor’s Degree
Every nurse practitioner begins as a registered nurse. While you can become an RN with an associate degree, you need a Bachelor of Science in Nursing (BSN) to qualify for graduate NP programs. The BSN typically takes four years, and you must pass the NCLEX-RN licensing exam to practice as a registered nurse before moving forward. Some NP programs expect applicants to have clinical nursing experience, though there is no universally mandated number of years.
Graduate Education: MSN or DNP
The next credential is a graduate degree from an accredited NP program. Two pathways exist: a Master of Science in Nursing (MSN) and a Doctor of Nursing Practice (DNP). The MSN is the current minimum for entry into practice and generally takes two to three years of full-time study. The DNP adds another one to two years beyond the master’s level and includes more coursework in leadership, evidence-based practice, and systems-level thinking.
An important shift is underway. In 2018, the National Organization of Nurse Practitioner Faculties committed to moving all entry-level NP education to the DNP by 2025. Not every program has made the switch, and NPs who already hold an MSN are not required to go back for a doctorate. But new students may find that more programs now offer only the DNP track, and the trend is clearly moving in that direction.
Regardless of which degree you pursue, all NP students must complete a minimum of 500 supervised direct patient care clinical hours during their program. These hours are hands-on time with real patients under the guidance of a licensed provider, and they are a hard requirement for program accreditation and certification eligibility.
Choosing a Population Focus
NP programs are not one-size-fits-all. You train and eventually certify in one of six recognized population focus areas:
- Family/individual across the life span
- Adult-gerontology (primary care or acute care)
- Pediatrics (primary care or acute care)
- Women’s health/gender-related
- Neonatal
- Psychiatric/mental health
Your population focus determines which certification exam you sit for, what jobs you qualify for, and what patient populations you can legally treat. Family NP is the most common choice because it covers patients of all ages, but the other tracks exist for NPs who want to specialize from the start.
National Board Certification
After completing your graduate program, you must pass a national certification exam. The two major certifying bodies are the American Academy of Nurse Practitioners Certification Board (AANPCB) and the American Nurses Credentialing Center (ANCC). Both are recognized by all U.S. state nursing boards, Medicare, Medicaid, the Veterans Administration, and private insurers.
The AANPCB, for example, offers certification exams for family NP, adult-gerontology NP, emergency NP, and psychiatric mental health NP. Each is a competency-based exam that tests clinical knowledge relevant to that population. The family NP exam covers individuals across the entire life span, while the adult-gerontology exam focuses on adolescents through older adults. You take the exam that matches your graduate training, and passing it earns you the credential (such as FNP-C or AGNP-C) that appears after your name.
This certification is not optional. Without it, you cannot obtain a state license to practice as an NP.
State Licensure
National certification gets you the credential. State licensure gives you legal permission to practice. Every state requires NPs to apply to their state board of nursing for an APRN license, which typically involves submitting proof of your graduate degree, your national certification, your active RN license, a background check, and a fee. Some states also require a separate application for prescriptive authority, the legal right to prescribe medications.
What makes state licensure especially important is that practice authority varies significantly by state. States fall into three categories:
- Full practice: NPs can evaluate patients, diagnose conditions, order and interpret tests, and prescribe medications (including controlled substances) independently under the authority of the state board of nursing. This is the model recommended by the National Academy of Medicine and the National Council of State Boards of Nursing.
- Reduced practice: State law requires NPs to maintain a career-long collaborative agreement with another health provider, or it limits at least one element of their practice.
- Restricted practice: State law requires career-long supervision, delegation, or team management by another provider for the NP to see patients.
If you move to a different state, you need to apply for a new license there, and the scope of what you can do may change. An NP practicing independently in a full-practice state would need a collaborating physician agreement if they relocated to a reduced-practice state.
Keeping Your Credentials Current
NP credentials are not permanent. National certification must be renewed every five years, and the requirements go well beyond paying a fee. Under AANPCB’s most common renewal pathway, you need a minimum of 1,000 practice hours as an NP in your certified population focus during the five-year period. You also need at least 100 contact hours of advanced continuing education, with 25 of those hours specifically in pharmacology.
If you precept NP students (supervising them during their clinical rotations), up to 120 preceptor hours can replace 25 of your non-pharmacology continuing education credits. State RN and APRN licenses have their own separate renewal cycles and requirements, which vary by state but generally include additional continuing education hours.
What the Letters After a Name Mean
When you see a string of letters after a nurse practitioner’s name, each one represents a distinct credential. A typical example might read “Jane Smith, MSN, APRN, FNP-C.” Here, MSN is the degree, APRN is the state-level advanced practice license, and FNP-C indicates board certification as a family nurse practitioner. If you see DNP instead of MSN, the NP completed a doctoral program. The letters PMHNP-BC or AGPCNP-BC signal psychiatric mental health or adult-gerontology primary care certification, respectively. Each piece confirms that the NP met a specific educational, examination, or licensure requirement to practice.