A physician assistant (PA) diagnoses illnesses, prescribes medications, orders and interprets tests, develops treatment plans, and in many settings assists in surgery. PAs practice across nearly every medical specialty, from primary care to emergency medicine to orthopedics, and they can do most of what a physician does in day-to-day clinical care. The median annual salary is $133,260, and PA jobs are projected to grow 20 percent over the next decade, making it one of the fastest-growing healthcare careers in the country.
Core Clinical Responsibilities
The day-to-day work of a PA looks a lot like that of a physician. PAs take medical histories, conduct physical exams, diagnose conditions, order lab work and imaging, interpret results, and build treatment plans. They also counsel patients on preventive care, manage chronic conditions like diabetes and hypertension, and handle follow-up visits. In a busy family medicine clinic, a PA might see 20 or more patients a day, managing everything from sinus infections to blood pressure adjustments to mental health screenings.
What sets PAs apart from many other healthcare roles is the breadth of their clinical authority. Unlike professionals who focus on a narrow set of tasks, PAs function as generalist clinicians who can pivot between specialties throughout their careers without additional residency training. A PA working in cardiology this year could transition to urgent care next year with additional on-the-job training. This flexibility is built into how PAs are educated.
Prescribing Medications
PAs can prescribe medications in all 50 states, including controlled substances like pain medications, stimulants, and anti-anxiety drugs. To prescribe controlled substances, a PA must hold a DEA registration in addition to their state license. The specifics vary by state: some require a formal agreement with a supervising physician, while others grant PAs full prescriptive authority. In practice, this means your PA can handle the full range of prescription needs at a typical office visit, from antibiotics to blood pressure medications to short-term pain management after a procedure.
What PAs Do in Surgery
In the operating room, PAs serve as surgical first assistants. This means they work alongside the surgeon during the procedure, handling tasks like holding open incisions for visibility, controlling bleeding, inserting drains, injecting local anesthetics, and closing the wound with sutures at the end. They also help select instruments, anticipate what the surgeon needs next, and manage tissue with techniques like clamping, cauterizing, cutting, and retracting. In specialties like orthopedics, neurosurgery, and cardiothoracic surgery, PAs often become deeply skilled surgical team members who participate in hundreds of cases each year.
Outside the operating room, surgical PAs typically manage preoperative evaluations, post-surgical hospital rounds, and discharge planning. They’re often the clinician you’ll see most frequently if you’re recovering from a procedure in the hospital.
How PAs Compare to Physicians in Quality of Care
A large rapid review published in The BMJ found no difference in patient satisfaction between PAs and physicians across multiple care settings. In studies of diabetes management, patients whose primary provider was a PA had comparable blood sugar control, blood pressure levels, and cholesterol numbers to those treated by physicians. PAs were also more likely than physicians to document smoking cessation counseling and patient education.
In emergency departments, patients seen by PAs reported higher satisfaction scores, though they did tend to wait longer and have slightly longer visits. In gastroenterology, experienced PAs performing colonoscopies actually had shorter procedure times and higher success rates reaching the full length of the colon compared to some specialist physicians. However, PAs are not interchangeable with physicians in every scenario. General practitioners scored higher than PAs in problem-solving and patient management during consultations, and dermatologists were more efficient than PAs at identifying skin cancers from biopsies. The overall picture: PAs deliver safe, effective care, particularly in well-defined clinical roles and post-diagnostic management.
Education and Training
Becoming a PA requires a master’s degree from an accredited PA program, which typically takes about 27 months. Admission is competitive. Most programs require a bachelor’s degree plus significant prior healthcare experience, whether as an EMT, medical assistant, nurse, or in another hands-on clinical role. The first year of PA school covers didactic coursework in anatomy, pharmacology, pathophysiology, and clinical medicine. The second year consists of full-time clinical rotations across specialties like family medicine, surgery, emergency medicine, pediatrics, and psychiatry. These rotations average 40 hours per week of direct patient care, plus homework, patient logging, and preparation.
After graduation, PAs must pass the Physician Assistant National Certifying Exam (PANCE) to earn the PA-C credential. Maintaining certification requires 100 continuing medical education credits every two years over a 10-year cycle, ensuring PAs stay current with evolving medical practice.
Where PAs Work
PAs practice in virtually every healthcare setting. The most common include primary care clinics, hospital departments, urgent care centers, surgical practices, and specialty offices in fields like dermatology, psychiatry, and orthopedics. PAs also work in emergency departments, where they evaluate and treat patients independently for many common presentations. In rural and underserved areas, PAs frequently serve as the primary healthcare provider for entire communities.
Telehealth has expanded the PA role further. Many states authorize PAs to diagnose, treat, and prescribe through virtual visits, provided they obtain and document patient consent. This means your telehealth appointment for a respiratory infection, medication refill, or follow-up visit may be conducted by a PA working remotely.
PA vs. Physician vs. Nurse Practitioner
- PAs vs. physicians: Both can diagnose, treat, prescribe, and assist in surgery. Physicians complete four years of medical school plus three to seven years of residency, while PAs complete a shorter master’s program. In most states, PAs practice with some degree of physician collaboration or supervision, though several states have moved toward granting PAs full practice authority. Malpractice claim rates are significantly lower for PAs, ranging from 1.4 to 2.4 per 1,000 clinicians compared to 11.2 to 19 per 1,000 for physicians.
- PAs vs. nurse practitioners (NPs): Both roles overlap substantially in primary care. PAs are trained in a medical model similar to physicians, while NPs are trained in a nursing model. Both can prescribe, diagnose, and manage patients. In studies comparing the two, patient outcomes in areas like chronic disease management are essentially equivalent.
Job Outlook and Salary
The Bureau of Labor Statistics reports a median annual wage of $133,260 for PAs as of May 2024. Surgical subspecialties and emergency medicine tend to pay above the median, while primary care and pediatrics fall slightly below. Employment is projected to grow 20 percent from 2024 to 2034, driven by an aging population, physician shortages, and the expansion of PAs into roles that previously required a physician. That growth rate is roughly four times faster than the average for all U.S. occupations.