Medical education in the United States
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Medical education in the United States includes educational activities involved in the education and training of physicians (D.O. or M.D.) in the United States, from entry-level training through to continuing education of qualified specialists.
A typical outline of the medical education pathway is presented below; however, medicine is a diverse profession with many options available. For example, some physicians work in pharmaceutical research, occupational medicine (within a company), public health medicine (working for the general health of a population in an area), or join the armed forces.
In the United States a medical school is an institution with the purpose of educating physicians in the United States in the field of medicine. Admission into medical school may not technically require completion of a previous degree; however, applicants are usually required to complete at least 3 years of "pre-med" courses at the university level because in the US medical degrees are classified as Second entry degrees. Once enrolled in a medical school the five years progressive study is divided into two roughly equal components: pre-clinical (consisting of didactic courses in the basic sciences) and clinical (clerkships consisting of rotations through different wards of a teaching hospital). The degree granted at the conclusion of the next four years of study is Doctor of Osteopathic Medicine (D.O.) or Doctor of Medicine (M.D.) depending on the medical school; both degrees allow the holder to practice medicine after completing an accredited residency program.
During the last year of graduate medical education, students apply for postgraduate residencies in their chosen field of specialization. These vary in competitiveness depending upon the desirability of the specialty, prestige of the program, and the number of applicants relative to the number of available positions. All but a few positions are granted via a national computer match which pairs an applicant's preference with the programs' preference for applicants.
Historically, post-graduate medical education began with a free-standing, one-year internship. Completion of this year continues to be the minimum training requirement for obtaining a general license to practice medicine in most states. However, because of the gradual lengthening of post-graduate medical education, and the decline of its use as the terminal stage in training, most new physicians complete the internship requirement as their first year of residency.
Notwithstanding the trend toward internships integrated into categorical residencies, the one-year "traditional rotating internship" (sometimes called a "transitional year") continues to exist. Some residency training programs, such as in neurology and ophthalmology, do not include an internship year and begin after completion of an internship or transitional year. Some use it to re-apply to programs into which they were not accepted, while others use it as a year to decide upon a specialty. In addition, osteopathic physicians "are required to have completed an American Osteopathic Association (AOA)-approved first year of training in order to be licensed in Florida, Michigan, Oklahoma and Pennsylvania."
Each of the specialties in medicine has established its own curriculum, which defines the length and content of residency training necessary to practice in that specialty. Programs range from three years after medical school for internal medicine to five years for surgery to seven to eight years for neurosurgery. This does not include research years that may last from one to four years if a Ph.D. degree is pursued. Each specialty training program either incorporates an internship year to satisfy the requirements of state licensure, or stipulates that an internship year be completed before starting the program at the second post-graduate year (PGY-2).
A fellowship is a formal, full-time training program that focuses on a particular area within the specialty, with requirements beyond the related residency. Many highly specialized fields require formal training beyond residency. Examples of these include cardiology, endocrinology, oncology after internal medicine; cardiothoracic anesthesiology after anesthesiology; cardiothoracic surgery, pediatric surgery, surgical oncology after general surgery; reproductive endocrinology/infertility, maternal-fetal medicine, gynecologic oncology after obstetrics/gynecology. There are many others for each field of study. In some specialties such as pathology and radiology, a majority of graduating residents go on to further their training. The training programs for these fields are known as fellowships and their participants are fellows, to denote that they already have completed a residency and are board eligible or board certified in their basic specialty. Fellowships range in length from one to three years and are granted by application to the individual program or sub-specialty organizing board. Fellowships often contain a research component.
The physician or surgeon who has completed his or her residency and possibly fellowship training and is in the practice of his or her specialty is known as an attending physician. Physicians then must pass written and oral exams in their specialty in order to become board certified. Each of the 26 medical specialties has different requirements for practitioners to undertake continuing medical education activities.
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- Medline Plus (2012). "Doctor of medicine profession (MD)". U.S. National Library of Medicine of National Institutes of Health. Retrieved 20 December 2012.
- DO-Online.org | Postdoctoral Training | FAQS, 
- "Osteopathic Postdoctoral Training Structure" (PDF). American Osteopathic Association. Retrieved 10 November 2012.
- "About Medical Specialties Matching Program". National Resident Matching Program. 2010. Retrieved 20 December 2012.
- The Flexner Report
- Combined internal medicine and psychiatry residency
- Integrated Medical Curriculum
- List of medical schools in the United States