Medical residency is the training period after medical school where new doctors learn to practice independently under the supervision of experienced physicians. It lasts anywhere from three to seven years depending on the specialty, and it’s the bridge between earning an MD or DO degree and becoming a fully licensed, board-certified attending physician. Every doctor in the United States goes through it.
What Residency Actually Looks Like
Residents are fully licensed doctors, but they work under the guidance of attending physicians who oversee their clinical decisions. The training is structured around direct patient care: admitting and discharging patients, managing treatment plans, performing procedures, and making diagnostic decisions with increasing autonomy as the years progress. Most of a resident’s education happens not in a classroom but through conversations about patients with attending physicians, consultants, and fellow residents.
A typical schedule blends several types of shifts. “Short call” means a standard 8- to 10-hour day shift where residents admit patients and manage their current caseload. “Long call” is an extended shift of up to 30 hours, traditionally scheduled every third or fourth day, though this varies by program. Many programs now use a “night float” system, where one resident covers overnight shifts for a stretch of time, giving the rest of the team a more predictable sleep schedule. Formal education still happens through lectures, conferences, and case reviews, but the bulk of learning is hands-on.
Residency training is divided into postgraduate years, abbreviated PGY-1, PGY-2, and so on. A PGY-1 resident (often called an intern) handles foundational clinical work with close supervision. By the final years, residents are expected to function more like independent physicians, making complex decisions and sometimes supervising junior residents themselves.
How Long Each Specialty Takes
The length of residency depends entirely on the specialty. Family medicine, internal medicine, and pediatrics each require three years. Emergency medicine runs three to four years. General surgery takes five years, and some surgical subspecialties require additional fellowship training on top of that. Neurosurgery is among the longest at seven years.
Some specialties use a split training structure. A resident might complete a one-year “preliminary” program in general medicine or surgery, then move into an “advanced” program in a field like radiology or dermatology starting in PGY-2. Others enter a “categorical” program that covers all required training from day one through board eligibility. The structure you enter depends on the specialty and how the program is designed.
Getting Into Residency: Applications and the Match
The path into residency is a multi-step process that begins in the final year of medical school. Students apply through a centralized system called ERAS (Electronic Residency Application Service), which opens for applications in early September. All applications submitted during the first few weeks appear to programs on the same date, so there’s no advantage to applying on the first day versus the third week. Applications include medical school transcripts, performance evaluations, exam scores, personal statements, and letters of recommendation.
After reviewing applications, programs invite candidates for interviews, which typically run from October through January. Then comes the part that makes residency placement unique: the Match.
The Match, run by the National Resident Matching Program (NRMP), uses an algorithm where both applicants and programs submit ranked preference lists. The system then pairs them using what’s called a “student-proposing” algorithm. In simplified terms, each applicant is tentatively placed at their highest-ranked program that will accept them. If a program later receives a higher-ranked applicant, it can bump a previously accepted one, who then gets placed at their next preferred program. This continues through multiple rounds until every possible pairing is settled. Because students do the “proposing” in the algorithm, the system is designed to produce the best possible outcome for applicants rather than programs.
Couples can enter the Match together, linking their rank lists so the algorithm tries to place them in the same geographic area. On Match Day, typically in mid-March, every participating student finds out simultaneously where they’ll train for the next several years. The result is binding.
What Residents Get Paid
Resident salaries are modest relative to the hours worked. As a reference point, UCLA pays first-year residents $89,261 as of mid-2024, rising to $93,777 by late 2025. Pay increases with each postgraduate year, typically by a few thousand dollars annually. Most programs also provide health, dental, and vision insurance at no cost to the resident and their dependents.
Additional benefits often include disability and life insurance, mental health support services, and practical perks like ride-share programs for residents too fatigued to drive home after long shifts. The financial reality, though, is that residents work significantly more hours than most salaried professionals while carrying substantial medical school debt.
Work Hour Rules
Resident work hours are regulated by the Accreditation Council for Graduate Medical Education (ACGME). Since 2003, residents have been limited to 80 hours per week, averaged over four weeks. Overnight shifts were originally capped at 24 hours with a 6-hour transition period afterward, and residents were required to have at least 10 hours off between shifts.
In 2011, the rules tightened further for interns specifically, limiting their shifts to 16 hours. But in 2017, the ACGME rolled back that intern-specific cap, allowing all residents to work shifts beyond 16 hours when staying for continuity of patient care or important educational experiences. The 80-hour weekly average remains in place. In practice, many residents report that the actual hours worked can push close to or occasionally beyond these limits, and enforcement depends partly on program culture and self-reporting.
Requirements for International Medical Graduates
Doctors who graduated from medical schools outside the United States and Canada face additional steps. They must obtain ECFMG (Educational Commission for Foreign Medical Graduates) certification before entering any accredited residency program. This requires passing Step 1 and Step 2 of the U.S. Medical Licensing Examination, demonstrating English proficiency through a designated pathway, and verifying that their medical school is listed in the World Directory of Medical Schools with an ECFMG Sponsor Note. The medical school must have granted at least four credit years of education.
International graduates apply through the same ERAS system and participate in the same Match as U.S. graduates. However, competition is steeper: many programs receive far more international applications than domestic ones, and some programs have historically favored U.S. graduates. Visa sponsorship adds another layer, as programs must be willing to support either a J-1 or H-1B visa.
What Happens After Residency
Completing residency makes a physician “board eligible,” meaning they can sit for the certification exam in their specialty. Most residents apply during their final year of training. The exam is typically computer-based, though some specialties also require an oral examination. Physicians generally have three to seven years after finishing residency to pass the exam, depending on the specialty board’s rules.
Once certified, a physician is a board-certified attending, free to practice independently, join a group practice, or pursue academic medicine. Those who want to specialize further can enter a fellowship, which adds one to three more years of training in a subspecialty like cardiology, gastroenterology, or surgical oncology. After completing fellowship and passing an additional exam, they earn subspecialty board certification. Board certification isn’t permanent: physicians must participate in continuing certification throughout their careers to maintain their credentials.