Intern year is the first year of residency training after medical school, formally designated as postgraduate year one (PGY-1). It’s widely considered the most demanding year in a physician’s entire training. During this year, newly minted doctors transition from supervised medical students to functioning members of a clinical team, carrying real responsibility for patient care for the first time.
How Intern Year Fits Into Medical Training
After four years of medical school, graduates enter residency, a multi-year training program in their chosen specialty. Intern year is simply the first year of that residency. Depending on the specialty, the full residency lasts anywhere from three years (family medicine, internal medicine) to seven years (neurosurgery), with intern year always serving as the foundation.
Before starting, medical school graduates go through the National Resident Matching Program, commonly called “the Match.” This process begins the fall before graduation, when applicants research and apply to programs, then interview through the winter. In mid-March, applicants learn whether they matched, and on Match Day, they find out exactly where they’ll train. Most new interns begin on July 1.
Three Types of Intern Positions
Not all intern years are structured the same way. The type you complete depends on your specialty and career path.
- Categorical: The most common type. A categorical position is part of a full residency program that leads to board certification in a specialty. If you match into a categorical internal medicine spot, for example, your intern year is simply year one of a three-year commitment at that program.
- Preliminary: A standalone one- or two-year position that provides foundational clinical training, typically before entering an advanced specialty like radiology, dermatology, or ophthalmology. You complete the preliminary year at one program, then move to your advanced program.
- Transitional: Similar to a preliminary year but usually broader in scope, rotating through multiple specialties rather than focusing on one. Transitional years are also used as a bridge to advanced specialty training.
What Interns Actually Do Each Day
The daily routine varies by specialty and hospital, but certain tasks are universal. Before morning rounds, interns “pre-round” on their patients: reviewing overnight vital signs, new lab results, and any changes in condition. They then present this information to their team, which includes senior residents and an attending physician.
After rounds, the bulk of the day involves executing the care plan. That means placing orders for medications and tests, calling consultants from other specialties, writing daily progress notes, and coordinating discharges for patients going home. Interns also handle hands-on tasks like changing wound dressings, removing drains or staples, and performing basic procedures. Documentation alone can consume hours of a shift, and it’s one of the most commonly cited sources of stress.
Interns don’t work independently. ACGME standards require that PGY-1 residents always have direct supervision immediately available, either from a senior resident or an attending physician. As interns demonstrate competence in specific skills, they may earn the ability to perform those tasks with less direct oversight, but the supervising attending is always ultimately responsible for every patient’s care.
Schedule and Work Hour Limits
Intern schedules follow one of several models. The traditional structure involves regular daytime shifts with periodic 24-hour call shifts, where interns stay overnight in the hospital. A popular alternative is the “night float” system, where interns work blocks of consecutive night shifts (capped at 16 continuous hours) instead of pulling 24-hour stretches on top of regular daytime work.
The ACGME, which accredits all residency programs in the U.S., sets firm limits on how much interns can work. The core rules have been in place since 2003 and remain the standard:
- 80 hours per week maximum, averaged over four weeks
- One day off in every seven, averaged over four weeks
- No more than 24 continuous hours of scheduled clinical work
- At least 14 hours off after a 24-hour shift
- In-house call no more than every third night
These limits represent the ceiling, not the norm for every rotation. Some months are lighter, with closer to 50 or 60 hours per week. Others, particularly intensive care and surgical rotations, push right up against the 80-hour cap. Even with restrictions, working 70 to 80 hours a week is a dramatic jump from the clinical rotations of medical school.
Pay During Intern Year
Interns are paid a salary, but it’s modest relative to the hours worked. At one representative academic medical center (George Washington University), the PGY-1 salary is approximately $70,600 to $72,700 as of 2025. Salaries across the country generally fall in a similar range, varying by region and institution. When you divide that salary by the actual hours worked, the effective hourly rate often lands in the range of $15 to $20 per hour, a point of frustration for many interns carrying six-figure medical school debt.
Burnout and the Emotional Toll
Intern year is physically and emotionally grueling, though burnout rates actually start lower than many people expect. Roughly 29% of residents report burnout during intern year, a number that climbs to 40% by PGY-2 and nearly 45% by PGY-3. The relatively lower rate during intern year may reflect the initial adrenaline and novelty of finally practicing medicine, with accumulated fatigue building over subsequent years.
The biggest job-related stressors residents identify are administrative tasks (cited by about 33% of respondents) and schedule-related concerns (26%). The sheer volume of documentation, electronic health record work, and paperwork that accompanies patient care is consistently the top complaint. The clinical work itself, while intense, is often what interns find most rewarding. It’s the hours spent on a computer afterward that wear people down.
Exams and Licensing
Intern year isn’t just about clinical training. Most residency programs require interns to pass USMLE Step 3 (or COMLEX Level 3 for osteopathic physicians) before advancing to PGY-2. This is the final licensing exam, and passing it is required for an unrestricted medical license. The common advice is to schedule it during an elective block, when the workload is lighter and there’s more time to study. Taking it during a busy inpatient rotation is technically possible but adds significant stress to an already demanding schedule.
What Changes After Intern Year
The transition from PGY-1 to PGY-2 brings a meaningful shift in role. Interns spend most of their time executing the day-to-day tasks of patient care. Starting in the second year, residents take on more supervisory responsibility, overseeing the new class of interns, making more independent clinical decisions, and gradually developing the judgment that defines a practicing physician. The workload doesn’t necessarily decrease, but the nature of the work changes from task execution to clinical leadership. For many physicians, looking back, intern year stands out as the steepest learning curve they’ll ever experience.