A nurse practitioner (NP) is a registered nurse with advanced graduate training who can diagnose illnesses, order and interpret tests, and prescribe medications, including controlled substances. NPs function much like primary care physicians in many settings, and in more than 30 states they practice independently without physician oversight. As of 2024, there are roughly 320,400 nurse practitioners working in the United States, making them one of the fastest-growing segments of the healthcare workforce.
What Nurse Practitioners Do Day to Day
NPs deliver a broad range of healthcare services that overlap significantly with what you’d experience seeing a physician. They perform physical exams, diagnose acute and chronic conditions, develop treatment plans, and prescribe medications. They also order diagnostic tests like bloodwork and imaging, then analyze the results to guide your care. If you have a chronic condition like diabetes or high blood pressure, an NP can serve as your ongoing primary care provider, adjusting medications and monitoring your progress over time.
About 69% of nurse practitioners provide primary care. That makes them a major point of contact in everyday healthcare, handling everything from annual wellness visits and vaccinations to managing infections, injuries, and long-term disease.
Education and Training Requirements
Becoming a nurse practitioner starts with earning a registered nursing (RN) license. From there, NPs complete either a master’s or doctoral degree in nursing. The profession has been shifting toward the doctor of nursing practice (DNP) as the standard terminal degree.
Graduate NP programs require a minimum of 500 supervised clinical hours of direct patient care, though national quality standards set the bar at 750 hours, and many programs exceed that. A 2023 study of DNP programs found that students averaged about 791 hours of direct patient care plus an additional 170 hours of indirect clinical experience. During training, NPs choose a specific population focus, which determines the types of patients they’re qualified to treat after graduation.
This training model differs from physician assistants (PAs), who follow a curriculum modeled on medical school and complete around 2,000 hours of clinical rotations across multiple specialties. PAs train as generalists, while NPs specialize from the start. PAs are regulated by state medical boards, whereas NPs fall under state nursing boards.
Specialties and Population Focus Areas
NPs don’t train as generalists. Each one certifies in a specific population focus that defines the patients they can see:
- Family/Across the Lifespan: treats patients of all ages, the most common NP specialty
- Adult-Gerontology (Primary Care or Acute Care): focuses on adults and older patients, managing chronic diseases or acute hospital-based conditions
- Pediatric (Primary Care or Acute Care): covers newborns through adolescents
- Psychiatric-Mental Health: diagnoses and treats mental health conditions, including prescribing psychiatric medications
- Neonatal: provides care for critically ill or premature newborns
- Women’s Health/Gender-Related: covers reproductive and gynecologic care
After completing their degree, NPs must pass a national certification exam in their chosen population focus before they can practice.
Practice Authority and Prescribing
One of the most important things to understand about nurse practitioners is that their legal authority varies dramatically depending on where they work. States fall into three categories.
In full practice states, NPs can evaluate patients, diagnose conditions, order tests, and prescribe all medications (including controlled substances) without any physician involvement. This is the model recommended by the National Academy of Medicine and the National Council of State Boards of Nursing. In reduced practice states, NPs must maintain a career-long collaborative agreement with a physician in order to provide some or all elements of care. In restricted practice states, NPs need ongoing supervision, delegation, or team management from a physician.
Prescribing authority follows the same pattern. In states with full authority, NPs prescribe independently. In others, certain classes of medications, particularly controlled substances, may require a physician’s signature or be off-limits entirely. Prescription drug monitoring programs also vary by state, adding another layer of regulation around controlled substance prescribing.
Quality of Care Compared to Physicians
A large study of primary care patients in the Veterans Affairs system compared outcomes between patients assigned to NPs and those assigned to physicians. The results were strikingly similar. Among patients with diabetes, about 88% in both groups achieved adequate blood sugar control. Blood pressure control rates for patients with hypertension were nearly identical: 72.1% for NP patients versus 72.9% for physician patients. Cholesterol management in patients with heart disease showed no meaningful difference either.
NP-assigned patients actually had slightly fewer hospitalizations overall and fewer hospitalizations for conditions that good outpatient care should prevent. Differences in total healthcare costs between the two groups were not statistically significant. The malpractice rate for NPs sits at just 1.1%, which is notably low compared to medicine overall.
NPs in Rural and Underserved Areas
Nurse practitioners play an outsized role in communities that struggle to attract physicians. Research from the Healthforce Center at UCSF shows that NPs, particularly those in primary care, are more likely than physicians to practice in rural areas. They’re also more likely to relocate to rural communities and to stay once they’re there. The NP profession was born out of this exact need: in 1965, nurse Loretta Ford and pediatrician Henry Silver created the first NP program at the University of Colorado specifically to address a nationwide shortage of physicians in rural areas.
Salary and Job Growth
The median annual salary for nurse practitioners was $129,210 as of May 2024. Job growth projections are exceptionally strong. The Bureau of Labor Statistics projects NP employment will grow 40% between 2024 and 2034, adding roughly 128,400 new positions. That growth rate far outpaces the average for all occupations, driven largely by an aging population, expanded insurance coverage, and the ongoing need for primary care providers in underserved communities.