Take any walk through a US hospital, and you will hear two words again and again, resident and attending. Both are doctors. Both treat patients. So it’s easy to mix them up. The only difference is training. A ‘doctor’ has completed their medical studies and is now a specialist. An attending has completed that training and is responsible for the care of the patient. Here, we describe both roles, discuss them side-by-side, and give you a step-by-step tutorial from intern to attending.
A doctor that graduated from medical school. Presently, they are in training in one specialty, such as internal medicine, surgery, or pediatrics. This is where the doctors develop their standalone skills in their field. Residency lasts three to seven years. The length of the paper is dependent on the specialty.
In teaching hospitals, residents do much of the daily patient care. On a normal day, a resident may:
Residents get more responsibility each year. A first-year resident checks in with seniors often. A final-year resident usually runs the team and makes many calls alone.
A resident is a doctor. They have an MD or DO degree. The hospital pays them a salary. But they are still in training, so an attending supervises their work.
An attending is a doctor who has finished residency. Some have also finished a fellowship. They practice in their specialty without anyone supervising them. In a hospital, the attending has final responsibility for the patient. People also call them the “attending doctor,” the “staff physician,” or just “the attending.”
It depends on where they work. In a teaching hospital, an attending usually:
Some hospitals and clinics have no trainees. There, attendings see and treat patients on their own. You will find attendings in every specialty, from internal medicine to surgery to pediatrics.
Yes. The attending is the senior doctor on the team. Residents report to them. The attending is also the one held responsible for the patient. Still, good attendings treat residents as real team members. After all, residents often know each patient’s daily details best.
Here is a quick look at how the two roles compare.
| Feature | Resident Physician | Attending Physician |
| Training stage | Training in a specialty | Has finished residency |
| Experience | Building specialty skills | Has advanced experience in the specialty |
| Supervision | Works under supervision | Supervises residents and fellows |
| Responsibilities | Sees patients and helps manage care | Oversees care and is responsible for patients |
| Independence | Grows each year | Works independently |
| Teaching role | May teach students and junior residents | Teaches and evaluates trainees |
| Career stage | Doctor in training | Fully trained, practicing doctor |
Let’s say a patient arrives at night with a cough, fever, and trouble breathing. The resident on call sees the patient first. They take a history and do an exam. They order a chest X-ray and blood tests. The results show pneumonia. So the resident starts antibiotics and writes a plan. If the patient gets worse overnight, the resident calls the attending.
The next morning, the team does rounds with the attending. The resident presents the case. The attending reviews the results and examines the patient. Then they either agree with the plan or change it. The resident follows the plan through the day. If anything changes, they update the attending.
Residents don’t just watch. They give real, hands-on care. And supervision doesn’t always mean the attending is in the room. Under ACGME rules, supervision depends on a few things: the resident’s year, their skills, how sick the patient is, and hospital policy. For some tasks, the attending must be there. For others, they only need to be reachable by phone.
Residents are doctors. They are not medical students. Many patients get confused about this.
In the US, medical students are still earning their degree. They study in class and rotate through hospitals. But they can’t practice medicine on their own. Residents are different. They have already graduated with an MD or DO. They have matched into a residency program. Depending on the state, they hold a training license or a full license. And they get paid for their work.
So when a resident walks into your room, you are seeing a real doctor. Yes, they are still learning their specialty. And yes, an attending checks their work. But they are trained to examine, diagnose, and treat you within their role.
US medical training follows a set order. Here is how it works:
An intern is a first-year resident. PGY means “postgraduate year.” So PGY-1 is the first year after medical school. Some specialties, like radiology and dermatology, need a separate intern year first. This is called a preliminary or transitional year.
After intern year, doctors are just called residents. You’ll hear PGY-2, PGY-3, and so on. Senior residents often lead the team. They also guide interns and teach students.
A chief resident is chosen for a leadership role. They handle schedules and teaching. They also act as the link between residents and faculty. In internal medicine, the chief year often comes after residency. In general surgery, it is usually the last year of residency.
A fellow has finished residency and is now training in a narrower field. For example, an internal medicine graduate might do a cardiology or nephrology fellowship. Fellows are fully trained in their main specialty. But they are still trainees in their subspecialty.
These titles are used in the US. Other countries use different ones. In the UK, you’ll hear “foundation doctor,” “registrar,” and “consultant.” In Pakistan, it’s “house officer,” “postgraduate trainee,” and “consultant.” If you’re an IMG, learn the US terms early. They will help you in interviews and on your first day.
Our mock interviews, led by physicians who matched as IMGs, prepare you to talk about US teams, roles, and your fit like someone who already belongs.
After residency, most doctors choose one of two paths.
Many doctors start working as attendings right after residency. First, they need a full state medical license. The hospital also has to approve them. This step is called credentialing. Most doctors also pass their specialty board exam. This makes them board certified, and many employers expect it.
Some doctors want more training, so they do a fellowship. Most fellowships last one to three years. Each one focuses on a subspecialty.
Take internal medicine as an example. Residency takes three years. After that, a doctor can work as an attending internist or a hospitalist. Or they can do a fellowship in cardiology, gastroenterology, nephrology, or another field. Then they practice as an attending in that subspecialty.
Not really. A fellow is still training. An attending is already practicing. A fellowship gives you deeper skills in one area. But it is a different track, not a higher rank. An attending internist and an attending cardiologist are both attendings. They just focus on different things.
There is no single answer. It depends on your specialty and your path. Here is a common US route:
Internal medicine, family medicine, and pediatrics take three years. General surgery takes about five. Neurosurgery takes seven.
So most doctors become attendings 7 to 11 years after starting medical school. A fellowship adds more time. Research years and breaks can also stretch it. For IMGs, USMLE exams and the Match add time too.
From USMLE planning to ERAS and the Match, IMG Helping Hands maps each step so you reach residency and attending without costly detours.
In a teaching hospital, the attending is in charge of each patient’s overall care. But a few similar titles can be confusing.
The admitting physician is the doctor who admits the patient. The attending is the doctor responsible for the patient’s care during the stay. Often, they are the same person. But not always.
A hospitalist only treats patients inside the hospital. Most are trained in internal medicine or family medicine. A hospitalist is often the attending for admitted patients. So “hospitalist” tells you the type of work. “Attending” tells you the role.
Residents make clinical decisions all day. They order tests, change medications, and handle problems overnight. They do this within limits set by their program and their attending. So the attending’s oversight doesn’t mean residents just follow orders.
Yes. A resident with an MD or DO degree who is training in a specialty. Patients are diagnosed, examined and treated by residents. An attending supervises their work.
Yes. An attending is the top doctor in the team. They have final responsibility for the patient. They receive reports from the residents. Attendings also instruct residents and make sure they follow through on their decisions.
A fellow is a physician who has completed her/his residency. They train in a subspecialty such as cardiology, nephrology or critical care. Typically, fellowships last one to three years.
Residency is a generalist training program, such as general surgery or internal medicine. Fellowship comes after. It teaches you a more specialized aspect of that subject. All physicians in the United States should have residency experience. Fellowship is only required for subspecialties.
Partly. Many decisions are made independently, particularly in the later years, by the residents. However, they are always supervised by an attending. The level of proximity is dependent on the level of experience of the resident and the severity of the patient’s illness.
Typically, the majority of doctors begin as attendings or fellowship. They must have a complete medical license to practise independently. Virtually all also pursue board certification in their practice specialty.
No. There is still a fellow in training. An attending is a fully qualified physician. Rather, attendings are responsible for overseeing their fellows in their subspecialty.
A chief resident is elected to a leadership position. They are responsible for arranging the program and teaching procedures. They also provide a link between staff and residents. This occurs during or immediately following residency (depending on the program).
The name is of late 19th-century origin. So the young medical students of those days had to live on the premises of the hospital. They were indeed people of the hospital! Today, it’s their home, but the name has stuck.
No. There are no residents in the teaching hospitals, unless they have accredited programs. Many community hospitals and private clinics don’t. There, attendings are responsible for the care of patients by themselves.
The main difference between a resident and an attending is their stage of training. Residents are doctors learning a specialty under supervision. Attendings have finished that training. They take full responsibility for patient care. In teaching hospitals, they work side by side every day. And patients get the benefit of both.
If you’re an IMG, this hierarchy is worth learning early. It helps you understand how US hospitals work. Knowing what interns, residents, fellows, and attendings do will help you speak with confidence in interviews. It will also help you settle in faster once you start.
Understanding the hierarchy is the easy part. Matching into it is where we come in:
Articles published by IMG Helping Hands are prepared by our team using information from direct experience, publicly available resources, and educational references. AI tools may be used to assist with drafting, proofreading, and formatting; however, all content undergoes review and approval before publication.
The information provided is intended for educational purposes only. Requirements, policies, and processes may change over time. Readers should consult official sources for the most current information.
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