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January 9, 2026
April 10, 2025
4 min read

Medical Residency Length by Specialty

Anesthesiology Resident
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Contents

When deciding which residency program you might want to attend, you need to consider how long it will take. Learn the medical residency length for any specialty. 

The length of medical residency depends on what specialty you decide to pursue. Some specialties are longer, requiring more expertise in complicated medical treatments or procedures. For example, surgery residencies are at least five years long. 

We’ll illuminate how long residencies are for each specialty and explain factors contributing to program length. 

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How Long Is Medical Residency?

Now that we’ve outlined the factors that affect the length of residencies let's look at the numbers.

The following list is from the American Medical Association (AMA) and represents residency lengths by specialty: 

Residency Length Specialty
Three Years Internal medicine
Medical genetics and genomics
Osteopathic neuromusculoskeletal medicine (up to five years, depending on the program)
Pediatrics
Preventive medicine
Three to Four Years, Depending On the Program Emergency medicine
Family medicine
Neurology
Pathology—anatomic and clinical
Four Years Anesthesiology
Internal medicine-pediatrics
Nuclear medicine
Obstetrics and Gynecology
Ophthalmology
Dermatology
Psychiatry
Five Years Child Neurology
Diagnostic Radiology
Orthopedic surgery
Otolaryngology—head and neck surgery
Radiation oncology
General surgery
Urology
Vascular surgery
Six Years Plastic surgery—integrated
Interventional radiology (up to seven years, depending on the program)
Thoracic surgery (up to seven years, depending on the program)
Seven Years Neurological Surgery

This list gives you the most up-to-date information on residency length for specialization, but always remember to check with individual programs.

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Specialty-Specific Medical Residency Length

Residency lengths can vary considerably depending on the medical specialty you pursue. In this section, we will explore medical residency lengths by specialty

Neurosurgery

The general length for neurosurgery residency is seven years, making it one of the most extended training periods for medical specialists. This extended duration is necessary due to the complexity and intricacy of neurosurgical procedures. 

Neurosurgeons specialize in diagnosing and treating disorders of the nervous system, including the brain, spinal cord, and peripheral nerves, often requiring extensive surgical interventions. 

The extended training allows residents to develop a deep understanding of neurological conditions, gain expertise in complex surgical techniques, and build proficiency in managing critically ill patients. 

Neurosurgery residents undergo rigorous training that includes a mix of clinical rotations, research, and surgical experience, ensuring they are well-prepared to provide specialized and comprehensive care to patients with neurological disorders.

Psychiatry

Psychiatry residency typically spans four years, making it a shorter training period compared to some other medical specialties. During these four years, aspiring psychiatrists receive comprehensive training in the diagnosis, treatment, and management of various mental health conditions. 

The relatively shorter duration allows psychiatry residents to focus on gaining expertise in understanding and addressing the complex interplay of psychological and emotional factors that affect mental well-being. 

This specialization equips them to provide essential mental health services to their patients, ranging from therapy and counseling to medication management, and prepares them to contribute significantly to the field of mental healthcare.

Neurology

Neurology residency programs typically span four years, providing aspiring neurologists with an intensive and focused training experience. 

During this time, residents delve deep into the study of the nervous system, honing their skills in diagnosing and treating a wide range of neurological disorders, including stroke, epilepsy, multiple sclerosis, and more. 

This specialization prepares them to provide crucial neurological care to their patients and to contribute to ongoing advancements in the field of neurology through research and clinical practice.

Anesthesiology

Anesthesiology residencies typically last for four years after completing medical school. This duration allows residents to acquire comprehensive knowledge and practical experience in administering anesthesia, managing pain, and ensuring patient safety during surgical procedures. 

Anesthesiologists play a critical role in the operating room, and their training is designed to equip them with the skills needed to handle various surgical scenarios and medical conditions. 

Dermatology

Dermatology residencies typically last for three years after medical school. While shorter in duration compared to some other specialties, dermatology residencies are intensive and comprehensive. 

Residents gain expertise in diagnosing and treating various skin disorders, including dermatological surgery and cosmetic procedures. Dermatologists often work in outpatient settings, but their training also covers inpatient consultations and procedures. 

Radiology

Radiology residencies typically span five years after completing medical school. This time frame allows residents to develop a deep understanding of various imaging modalities, including X-rays, CT scans, MRIs, and nuclear medicine.

Internal Medicine

The internal medicine residency program lasts for three years. During this time, residents gain a broad and comprehensive understanding of various medical conditions affecting adults, including chronic diseases, infectious diseases, and complex medical cases.

General Surgery

General surgery residents spend five years. The first two years of residency aim at developing foundational skills and experiences in the spectrum of general surgery. In subsequent years, you will receive further training in specific medical areas.

This experience covers diagnostic workup, surgical techniques, preoperative preparation, intraoperative judgment, postoperative management, and follow-up care. Also, you get the opportunity to observe several clinical problems and different patient's responses.

Cardiology

As an aspiring cardiologist, you must undertake a three-year cardiologist residency. Because cardiology is a subspecialty of internal medicine, your residency program is under them. Residency years will teach you to evaluate and manage several medical conditions. Later on, you will move on to specialize in the cardiovascular system.

Family Medicine

A family medicine residency runs for four years. The program initially covers inpatient and outpatient rotations. This exposes residents to the in-depth care provided in the hospital and continuity of care in the patient's home clinic.

Urology

Urology residencies typically span five years following medical school. During this time, residents receive extensive training in diagnosing and treating a wide range of urological conditions, including urinary tract infections, kidney stones, and prostate issues.

The five-year urology residency program ensures these physicians are highly proficient in providing comprehensive urological care, from medical management to surgical interventions, and they are well equipped to address the diverse needs of patients in this field.

Pediatrics

Pediatric residency training typically spans three to four years, with the initial three years focusing on basic training. During this foundational period, pediatric residents acquire essential skills in diagnosing and managing a wide range of childhood illnesses and conditions. 

The fourth year of pediatric residency provides an opportunity for residents to further specialize in their chosen area of expertise. This allows pediatricians to deepen their knowledge and skills in a specific area of pediatric care, ensuring they can provide the highest level of specialized care to young patients.

Ophthalmology

As an aspiring ophthalmologist, your residency spans four years, comprising one intern year and three specialized ophthalmology-focused years. Throughout the residency, you'll gain valuable clinical and surgical experience in various settings, including outpatient and inpatient care. 

Your training will encompass a wide range of patient care responsibilities, as well as participation in seminars, research projects, and conferences aimed at advancing your knowledge and expertise in the field.

Plastic Surgery

Plastic surgery residencies are notably longer than many other specialties, spanning six to seven years. This duration is necessary because plastic surgeons require extensive training in both cosmetic and reconstructive procedures, including surgeries on the face, body, and extremities. 

Plastic surgeons must develop intricate surgical skills, knowledge of tissue grafting and microsurgery, and an understanding of aesthetic principles. 

Orthopedic Surgery

An orthopedic surgery residency typically takes five years to complete. During this time, you will learn to diagnose and treat musculoskeletal conditions, including bone and joint disorders, injuries, and various orthopedic surgical techniques. 

The training includes clinical rotations and surgical experiences to prepare residents for a career in orthopedic surgery. 

Emergency Medicine

Emergency medicine residencies typically span three to four years after medical school. During this period, residents gain extensive experience in managing a wide range of medical emergencies, including trauma, cardiac events, respiratory distress, and critical care scenarios. 

Oncology

To become an oncologist, you’ll have to complete a three to four-year residency program. These residencies provide comprehensive training in the various aspects of cancer care, including chemotherapy, radiation therapy, immunotherapy, and targeted therapies.

Interventional Radiology

During the six-year residency, aspiring interventional radiologists acquire in-depth knowledge of medical imaging techniques, including ultrasound, CT scans, and MRI, and gain proficiency in using these technologies to guide minimally invasive procedures.

Vascular Surgery

Vascular surgery residencies typically last five to seven years. Residents learn to diagnose and treat diseases of the blood vessels, including arteries and veins, and perform surgical procedures to address these conditions.

Gastroenterology

After completing the three-year internal medicine residency, a gastroenterology fellowship adds two to three years. The training involves diagnosing and treating digestive system disorders and performing endoscopic procedures.

Dental

Dental residency programs typically range from one to six years in length. The duration varies depending on the chosen dental specialty. For example, a general dentistry residency is typically one year, while advanced specialties like oral surgery or orthodontics may require three to six years of training. 

Diagnostic Radiology

A diagnostic radiology residency typically takes four to five years to complete. Residents learn to interpret medical images, such as X-rays, CT scans, and MRIs, and assist in diagnosing a wide range of medical conditions.

Endocrinology

Endocrinology is a subspecialty of internal medicine. After completing a general three-year internal medicine residency, an endocrinology fellowship takes two to three years to complete. During this period, you learn to diagnose and treat hormonal disorders.

Oral Surgery

Oral surgery residencies typically last four to six years, depending on the program and the specific focus of the training. 

During this period, residents receive comprehensive education and clinical experience in various aspects of oral and maxillofacial surgery, including dental extractions, facial trauma management, and complex surgical procedures.

Otolaryngology 

Otolaryngology residencies typically take five years to complete. During this time, residents learn how to diagnose and surgically treat disorders related to the head and neck, including conditions affecting the ear, nose, throat, and related structures.

Gynecology

Gynecology is typically pursued as a subspecialty within the field of obstetrics and gynecology. A standard OB/GYN residency lasts four years, and after completing this residency, physicians have the option to pursue further specialization in various gynecological subspecialties.

Cardiac Surgery

Cardiac surgery residencies can vary but often take six to eight years. As a resident, you will learn how to perform surgical procedures on the heart and blood vessels.

Laboratory Medicine

Laboratory medicine residencies typically last for three to four years, depending on the program and specific requirements. Residents gain expertise in clinical laboratory testing, diagnostics, and quality assurance processes, preparing them for careers in medical laboratories, pathology, and related fields.

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Factors That Affect Residency Length

The main factor that affects residency length is the field's specializedness. For example, a general surgeon will have a shorter residency than a neurosurgeon. The anatomy you need to know as a neurosurgeon is much more complicated than that of a general surgeon, which is why there’s a difference in residency length.

Another factor influencing residency length is if the program requires a transitional year between medical school and the specialization. Some programs require residents to do more general training before specializing. This adds a year to the medical residency.

Medical residency program lengths might differ depending on which program you match with. Though programs tend to follow similar timelines, some might have longer or shorter programs.

It is also important to know which programs require further training in the form of fellowships. For some specialties, you’ll be expected to do a fellowship program after residency. This means more training and time before you’re considered a fully qualified doctor.

All these factors are important to remember when deciding on a specialty program. Consider what your life might look like for the next three to ten years before deciding. 

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Medical Residency Lengths FAQs 

Still have questions about how many years residencies are by specialty? Read on for more answers! 

1. What is the Shortest Medical Residency? 

The shortest residencies include internal medicine, medical genetics and genomics, osteopathic neuromusculoskeletal medicine, pediatrics, preventive medicine, and emergency medicine

2. What Doctor Has the Longest Residency? 

Neurological surgeons complete the longest residencies (seven years). 

3. Do Medical Students Get Paid During Residency? 

Yes, medical residents are paid for their work – salaries tend to increase each year of residency. 

4. What Residency is Six Years? 

Six-year-long residencies include plastic surgery and some programs in interventional radiology and thoracic surgery. 

5. How Long is a Dermatology Residency? 

Dermatology residencies are typically four years long. 

6. What Is the Difference Between a Doctor and a Resident?

A doctor who has completed residency is fully licensed and board-certified in their medical specialty, allowing them to practice medicine autonomously. In contrast, a resident doctor has finished medical school but has not completed residency, requiring supervision while practicing medicine.

7. How Many Hours Do Medical Residents Work?

The number of work hours varies with the year they are in, the specialty, and the hospital policies. According to ACGME regulations, residents should work 80 hours a week over four weeks. They can have a maximum shift length of 24 hours for first-year residents (interns) with additional time for transitions of care. 

Upper-level residents have a maximum shift of 24 hours, with an additional 4 hours for educational activities. Some specialties, such as surgical and emergency medicine, may approach or exceed their 80-hour limit.

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Final Thoughts

Picking a specialization in medical school can be challenging. Before committing to a particular specialization, it's best to know exactly what you’re getting into. You can find a specialization that fits your life plan by looking at medical residency lengths. 

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Dr. Jonathan Preminger

Reviewed by:

Dr. Jonathan Preminger

Anesthesiology Resident, Hofstra-Northwell School of Medicine

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