That’s not necessarily a bad thing; though they don’t have as extensive training as an MD or DO, both nurse practitioners and physician assistants can deal with many of the complaints someone would have at their primary care office.
Nurse practitioners and physician assistants are paid less than doctors are, but in some states they can generate nearly as much income for practices because they can bill at the same rate as doctors, says Dr. David Chan, a professor at the University of California, Berkeley who studies health economics. Doctors make, on average, $239,200 a year, according to the Bureau of Labor Statistics—nearly double what physician assistants and nurse practitioners make.
Estimates suggest that in a decade, there will be many more NPs and PAs than MDs and DOs across medicine. While the number of physicians in the U.S. is projected to grow by just 3% between 2024 and 2034, according to the Bureau of Labor Statistics, the number of physician assistants is expected to grow by 20%, and the number of nurse anesthetists, nurse midwives, and nurse practitioners is expected to grow by 35% over that time.
Here’s what patients should know about PAs, NPs, and what you might get from one type of provider vs. another.
Nurse practitioners can diagnose and treat illnesses, prescribe medications, manage chronic conditions, order and interpret diagnostic tests, and provide preventative care, says Valerie J. Fuller, president of the American Association of Nurse Practitioners (AANP). Fuller says NPs are unique because they are trained in nursing and so are extremely patient-centered. “I think patients who choose a nurse practitioner are really looking for a clinician who can diagnose, treat, manage their health needs, but who also takes the time to listen,” she says.
Nurse practitioners have what’s called full practice authority in 27 states, meaning they can practice without being supervised by a physician. That’s up from just 14 states in 2010. And although some states have passed legislation that requires visits with nurse practitioners to be compensated at the same rate as physicians, that’s not the case in all states. Medicare reimburses nurse practitioners at 85% of what they reimburse for physicians, Fuller says.
What is a physician assistant (PA)?
Physician assistants came about in the wake of the Vietnam War, when thousands of medics were returning from overseas and looking for a place to fit in the medical field, says Morgan, of Duke. Today, to recognize their independence, the American Academy of Physician Associates (AAPA) is advocating for PAs to be referred to as “physician associates” rather than “physician assistants.”
To start a PA program, students must have a bachelor’s degree, complete prerequisite coursework, and enter PA school with more than 3,000 hours of patient-contact experience, Taylor says. PA programs usually last three academic years that include more than 2,000 hours of clinical experience.
Some PAs practice in primary care, but others specialize in surgery, oncology, and other areas, assisting doctors and making them more productive, says Morgan. A PA could prep patients for surgery and close a patient up after surgery, for instance, allowing the surgeon to see more patients, she says. “PAs in specialties add at least as much value as ones in primary care,” she says.
Are NPs and PAs as effective as MDs and DOs?
Patients may be hesitant to see a NP or PA because they have less education and medical training than a doctor. There have been recent reports of poorly trained NPs missing key indicators of illness, most notably in a Bloomberg series about the rising numbers of nurse practitioners.
The training differences are stark. Physicians complete four years of medical school plus a three-to-seven year residency program, which can include 12,000 to 16,000 hours of clinical training. Nurse practitioners do not have a residency requirement and have about 500-720 hours of clinical training, and PAs are required to have about 2,000 hours of supervised clinical practice.
What does the research show about the effectiveness of each type of provider? It depends on the study, says Chan of UC Berkeley, who has examined the difference between NPs and physicians in an emergency-room setting. In one study, Chan looked at what happened in emergency rooms when the Veterans Health Administration began allowing nurse practitioners to practice without physician supervision in 2016. His work suggested that NPs ordered more external tests than did physicians, had more patients returning to the ER with infections than did physicians, and were more likely than physicians to prescribe antibiotics. But “the evidence is still kind of limited,” Chan says. Some doctors will have better patient outcomes than some nurse practitioners, but the reverse is true, too.
Another study of VA patients with diabetes found that the health care costs were about 7% lower for NP and PA patients than patients who saw a physician, because patients who saw a doctor were more likely to use the emergency room and inpatient services. Morgan of Duke, the lead author of that study, speculates that this is because it might be easier for patients to reach their PA or NP than their physician, allowing their provider to help them address concerns or adjust medications quickly without having to go to the emergency room.
“Increasingly, health care is about teams,” Chan says. “So the next question is: How do we best organize teams with NPs and doctors and others?”
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