A hospital intern is a doctor in their very first year of training after medical school. They’ve earned their medical degree and passed their licensing exams, but they aren’t yet allowed to practice independently. Instead, they work under the direct supervision of senior residents and attending physicians while learning to manage real patients on their own. The term “intern” is informal but still widely used in hospitals across the country.
Why the Term “Intern” Still Exists
Officially, there are no more “interns” in American medicine. The Accreditation Council for Graduate Medical Education stopped using the term back in 1975, replacing it with “PGY-1,” which stands for postgraduate year one. Every year of residency training gets a PGY number: PGY-1 for the first year, PGY-2 for the second, and so on. But nearly 50 years later, hospitals, patients, and even the doctors themselves still call first-year residents “interns.” It’s one of those labels that stuck because it’s useful, drawing a clear line between the newest doctors on the team and everyone else.
Where Interns Fit in the Hospital Hierarchy
Hospitals run on a layered system of physician authority. At the top is the attending physician, a fully licensed, board-certified doctor who holds ultimate responsibility for each patient’s care. Below the attending are senior residents in their second, third, or later years of training. The intern sits at the bottom of this physician ladder.
Interns are doctors. They have a medical degree (MD or DO), and they can examine patients, write notes, place orders, and even prescribe medications. But they do all of this under supervision. Their prescriptions, for example, are written under the hospital’s own Drug Enforcement Administration number with a suffix the institution assigns to them, valid only within their training duties. Every major clinical decision an intern makes gets reviewed by a more senior physician before it becomes final.
How Someone Becomes an Intern
The path to internship runs through four years of medical school followed by a national placement system called the Match. Run by the National Resident Matching Program, this process pairs graduating medical students with residency programs using a computer algorithm. Students and programs each submit ranked preference lists, and the algorithm works through every applicant’s list to find the best mutual fit. When the process finishes, all matches become final and binding.
Most new interns start orientation in the last week of June, with clinical duties beginning in early July. This is why July has a reputation in hospitals as the month when the newest, least experienced doctors arrive on the wards.
Three Types of Intern Year
Not all internships are structured the same way. There are three main tracks, and which one a new doctor enters depends on their chosen specialty.
- Categorical: The intern year is built into a full residency in one specialty. A person matched into a categorical internal medicine program, for instance, completes intern year and then continues in the same program for their remaining training years, ending with board eligibility in that field.
- Preliminary: A standalone one- or two-year position that provides foundational clinical training before the doctor moves on to an advanced specialty program elsewhere. Someone heading into dermatology or radiology, for example, often needs a preliminary year of general medicine or surgery first.
- Transitional: A type of preliminary year that rotates through multiple specialties rather than focusing on just one. It’s designed to give broad clinical exposure before an advanced specialty begins.
What an Intern Actually Does All Day
An intern’s day typically starts early, often before formal rounds, with a process called prerounding. This means checking in on each assigned patient: reviewing vital signs, lab results, imaging, and medication changes from the past 24 hours, then doing a focused physical exam covering at least the heart, lungs, abdomen, skin, and overall appearance. The intern also talks directly with nurses to learn what happened overnight.
When the full medical team gathers for rounds, the intern presents each patient’s status using a structured format (subjective findings, objective data, assessment, plan) and discusses the care plan with the attending physician. The sickest patients and new admissions get the most attention. After rounds, the real task list begins: placing orders for labs and imaging, calling specialist consultations, writing progress notes, completing admission paperwork, and preparing discharge summaries for patients going home. Time-sensitive tasks like urgent consults and same-day lab orders come first. Non-urgent work, like scheduling tests for the following day, gets pushed to the afternoon.
Throughout all of this, the intern is learning by doing. They’re building the clinical judgment that turns textbook knowledge into real decision-making, with the safety net of senior physicians catching mistakes before they reach patients.
Work Hours and Limits
Intern year is notoriously demanding, but federal training rules set hard boundaries. Interns are limited to 80 hours of clinical and educational work per week, averaged over a four-week period. No single shift can exceed 24 hours of continuous scheduled clinical work, though up to four additional hours are allowed for handoffs and education (not new patient care). After a 24-hour shift, interns must have at least 14 hours completely free from clinical duties. They’re also guaranteed a minimum of one full day off per seven-day stretch, averaged over four weeks.
These limits exist because research repeatedly showed that sleep-deprived doctors make more errors. Even with the caps in place, 80 hours a week is the equivalent of two full-time jobs, and many interns describe the year as the most physically and mentally exhausting period of their careers.
How Much Interns Get Paid
Despite holding a medical degree and working extreme hours, interns earn relatively modest salaries. First-year residents make roughly $60,000 to $70,000 per year, with the national average hovering around $65,000. When you divide that by the number of hours actually worked, the effective hourly rate often falls below $20. Most interns are also carrying significant medical school debt, which makes the financial pressure of intern year a well-known source of stress in the profession. Pay increases modestly with each subsequent year of residency, but substantial earning power doesn’t arrive until training is complete and independent practice begins.
What It Means for You as a Patient
If you’re treated by an intern at a teaching hospital, you’re being cared for by a real physician who has completed medical school and passed national licensing exams. They may be newer to clinical practice, but they are never working alone. Every significant decision they make is reviewed by a resident or attending physician with years more experience. Teaching hospitals tend to have multiple layers of oversight precisely because trainees are involved, and studies have consistently shown that academic medical centers deliver outcomes on par with or better than non-teaching hospitals. If an intern introduces themselves as “doctor,” they are one. They just happen to be in the most intensive learning year of their career.