What Is a PA? Physician Assistant Role Explained

By: Savanna Perry, PA-C

TL;DR

A PA, or physician assistant, is a medical provider who can take a history, diagnose, decide on treatment, and prescribe medications, usually with a supervising physician available. PAs complete a master's level program of about 2 to 3 years and pass a national certification exam. They have more clinical education than nurses but do not complete the residency training physicians do.

Last Updated: June 12, 2026

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What does PA stand for and what is the role?

I assume everyone who visits this site already knows what a PA is, but that is not always true. The public is still somewhat unclear about PAs and what we can do, so part of our job as people in the profession is to educate. I still get asked, "So when are you going to be a real doctor?" or "Are you going back to medical school?"

PA stands for physician assistant. Some people do not love the term mid-level, but it is a reasonable description of the role. PAs have more education and are trained differently than nurses, but do not go through the years long residency that physicians complete. Nurses are educated in a holistic way to provide excellent patient care, but they generally do not diagnose or treat independently.

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How does PA education compare to physicians and nurses?

Physicians go through 4 years of medical school, then choose a specialty, then complete a residency that can range from about 3 to 12 years, sometimes more. PAs take a different and shorter path.

Most PA programs require an undergraduate degree and then award a master's. Programs are typically 2 to 3 years of very intense school, after which you can choose a residency or go straight into a job. PA residencies are still fairly new, so most new grads go directly into a position. To become certified, you must pass a national exam and then be certified by the state where you work, and you maintain that with recertification exams and continuing education.

In Our Experience

In our experience coaching pre-PA students, being able to clearly explain what a PA is, in your own words, is one of the most underrated interview skills. Programs want to see that you understand the role you are signing up for, so practice describing PA education, scope, and the SP relationship out loud before your interviews.

What can a PA do, and how does supervision work?

PAs work with a supervising physician, or SP, and how much oversight that involves depends heavily on the state. For example, in Georgia the SP must review 80 percent of PA notes [VERIFY], while in South Carolina the SP only has to review notes occasionally with no set requirement [VERIFY]. Scope of practice varies by state, and a PA's independence depends on the SP's trust, the specialty, and experience. Personally, I have my own clinic schedule and see all my patients on my own, with my SP available if something tough comes up.In many ways PAs are similar to physicians. We see patients independently, take histories, make diagnoses, decide on treatment, and prescribe medications. Some PAs perform procedures and surgeries after adequate training. In certain states there are restrictions on what PAs can prescribe, especially controlled pain medications.

Every Pre-PA Should Know...

Scope of practice for PAs is set state by state, so the same provider may have very different oversight rules depending on where they work.

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Listen: What Is a PA? Back to the Basics

Start here. Seriously, if you're brand new, this is the episode.

Episode show notes & key takeaways

Start here. Seriously, if you're brand new, this is the episode.

What is a PA? What do you need to get into PA school? What should you be doing right now? I answer all of it from the ground up, because I get these questions weekly and there's no shame in being at the beginning.

Here's the honest part. This process has gotten harder. Programs get more applications every year and the numbers people are getting in with keep climbing. That's not meant to scare you, it's meant to keep you from planning around outdated advice you read on a forum in 2014.

The good news is the requirements are knowable. Prereqs, GPA, patient care hours, shadowing, letters, essay, interview. That's the whole list. It's just long.

What I cover

What a PA actually is and what the job involves
Prerequisite courses and how they vary by program
What GPA you realistically need
Patient care experience and how much
Shadowing, letters of recommendation, and the personal statement
How to build a timeline instead of scrambling

Resources

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