Medicine is the science and practice of caring for patients, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness. Contemporary medicine applies biomedical sciences, biomedical research, genetics, and medical technology to diagnose, treat, and prevent injury and disease, typically through pharmaceuticals or surgery, but also through therapies as diverse as psychotherapy, external splints and traction, medical devices, biologics, and ionizing radiation, amongst others.
Nephrology is a specialty for both adult internal medicine and pediatric medicine that concerns the study of the kidneys, specifically normal kidney function and kidney disease, the preservation of kidney health, and the treatment of kidney disease, from diet and medication to renal replacement therapy. The word "renal" is an adjective meaning "relating to the kidneys", and its roots are French or late Latin. Whereas according to some opinions, "renal" and "nephro" should be replaced with "kidney" in scientific writings such as "kidney medicine" or "kidney replacement therapy", other experts have advocated preserving the use of renal and nephro as appropriate including in "nephrology" and "renal replacement therapy", respectively.
A physician, medical practitioner, medical doctor, or simply doctor is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through the study, diagnosis, prognosis and treatment of disease, injury, and other physical and mental impairments. Physicians may focus their practice on certain disease categories, types of patients, and methods of treatment—known as specialities—or they may assume responsibility for the provision of continuing and comprehensive medical care to individuals, families, and communities—known as general practice. Medical practice properly requires both a detailed knowledge of the academic disciplines, such as anatomy and physiology, underlying diseases and their treatment—the science of medicine—and also a decent competence in its applied practice—the art or craft of medicine.
Emergency medicine is the medical speciality concerned with the care of illnesses or injuries requiring immediate medical attention. Emergency physicians specialize in providing care for unscheduled and undifferentiated patients of all ages. As first-line providers, in coordination with emergency medical services, they are primarily responsible for initiating resuscitation and stabilization and performing the initial investigations and interventions necessary to diagnose and treat illnesses or injuries in the acute phase. Emergency medical physicians generally practice in hospital emergency departments, pre-hospital settings via emergency medical services, and intensive care units. Still, they may also work in primary care settings such as urgent care clinics.
In the medical profession, a general practitioner (GP) or family physician is a doctor who is a consultant in general practice. GPs have distinct expertise and experience in providing whole person medical care whilst managing the complexity, uncertainty and risk associated with the continuous care they provide. GPs work at the heart of their communities, striving to provide comprehensive and equitable care for everyone, taking into account their health care needs, stage of life and background. GPs work in, connect with and lead multidisciplinary teams that care for people and their families, respecting the context in which they live, aiming to ensure all of their physical and mental health needs are met. They are trained to treat patients to levels of complexity that vary between countries. The term "primary care physician" is more usually used in the US.
Osteopathic medicine is a branch of the medical profession in the United States that promotes the practice of science-based medicine, often referred to in this context as allopathic medicine, with a set of philosophy and principles set by its earlier form, osteopathy. Osteopathic physicians (DOs) are graduates of American osteopathic medical colleges and are licensed to practice the full scope of medicine and surgery in all 50 US states. The field is distinct from osteopathic practices offered in nations outside of the U.S., whose practitioners are generally not considered part of core medical staff nor of medicine itself, but rather are alternative medicine practitioners. The other major branch of medicine in the United States is referred to by practitioners of osteopathic medicine as allopathic medicine.
Internal medicine, also known as general internal medicine in Commonwealth nations, is a medical specialty for medical doctors focused on the prevention, diagnosis, and treatment of internal diseases in adults. Medical practitioners of internal medicine are referred to as internists, or physicians in Commonwealth nations. Internists possess specialized skills in managing patients with undifferentiated or multi-system disease processes. They provide care to both hospitalized (inpatient) and ambulatory (outpatient) patients and often contribute significantly to teaching and research. Internists are qualified physicians who have undergone postgraduate training in internal medicine, and should not be confused with "interns", a term commonly used for a medical doctor who has obtained a medical degree but does not yet have a license to practice medicine unsupervised.
Ambulatory care or outpatient care is medical care provided on an outpatient basis, including diagnosis, observation, consultation, treatment, intervention, and rehabilitation services. This care can include advanced medical technology and procedures even when provided outside of hospitals.
Primary care is the day-to-day healthcare given by a health care provider. Typically this provider acts as the first contact and principal point of continuing care for patients within a healthcare system, and coordinates other specialist care that the patient may need. Patients commonly receive primary care from professionals such as a primary care physician, a physician assistant, a physical therapist, or a nurse practitioner. In some localities, such a professional may be a registered nurse, a pharmacist, a clinical officer, or an Ayurvedic or other traditional medicine professional. Depending on the nature of the health condition, patients may then be referred for secondary or tertiary care.
Hospital medicine is a medical specialty that exists in some countries as a branch of family medicine or internal medicine, dealing with the care of acutely ill hospitalized patients. Physicians whose primary professional focus is caring for hospitalized patients only while they are in the hospital are called hospitalists. Originating in the United States, this type of medical practice has extended into Australia and Canada. The vast majority of physicians who refer to themselves as hospitalists focus their practice upon hospitalized patients. Hospitalists are not necessarily required to have separate board certification in hospital medicine.
Family medicine is a medical specialty within primary care that provides continuing and comprehensive health care for the individual and family across all ages, genders, diseases, and parts of the body. The specialist, who is usually a primary care physician, is named a family physician. It is often referred to as general practice and a practitioner as a general practitioner. Historically, their role was once performed by any doctor with qualifications from a medical school and who works in the community. However, since the 1950s, family medicine / general practice has become a specialty in its own right, with specific training requirements tailored to each country. The names of the specialty emphasize its holistic nature and/or its roots in the family. It is based on knowledge of the patient in the context of the family and the community, focusing on disease prevention and health promotion. According to the World Organization of Family Doctors (WONCA), the aim of family medicine is "promoting personal, comprehensive and continuing care for the individual in the context of the family and the community". The issues of values underlying this practice are usually known as primary care ethics.
A primary care physician (PCP) is a physician who provides both the first contact for a person with an undiagnosed health concern as well as continuing care of varied medical conditions, not limited by cause, organ system, or diagnosis. The term is primarily used in the United States. In the past, the equivalent term was 'general practitioner' in the US; however in the United Kingdom and other countries the term general practitioner is still used. With the advent of nurses as PCPs, the term PCP has also been expanded to denote primary care providers.
A fellowship is the period of medical training, in the United States and Canada, that a physician, dentist, or veterinarian may undertake after completing a specialty training program (residency). During this time, the physician is known as a fellow. Fellows are capable of acting as an attending physician or a consultant physician in the specialist field in which they were trained, such as internal medicine or pediatrics. After completing a fellowship in the relevant sub-specialty, the physician is permitted to practice without direct supervision by other physicians in that sub-specialty, such as cardiology or oncology.
The Society of Hospital Medicine (SHM) is a membership society for hospitalists, physicians, and other caregivers who practice the specialty of hospital medicine.
Nicole Lurie is an American physician, professor of medicine, and public health leader. She is Executive Director for Preparedness and Response at the Coalition for Epidemic Preparedness Innovations (CEPI) and Director of CEPI-US. She is also a Lecturer at Harvard Medical School and Adjunct Professor at the George Washington University School of Medicine. During the administration of President Barack Obama, she was Assistant Secretary for Preparedness and Response (ASPR) at the United States Department of Health and Human Services (HHS) from 2009 through the end of the president's second term. The mission of the Office of the Assistant Secretary for Preparedness and Response is to "lead the nation in preventing, responding to and recovering from the adverse health effects of public health emergencies and disasters, ranging from hurricanes to bioterrorism."
Erin N. Marcus, M.D., M.P.H is an internal medicine doctor who writes on public health and health disparity issues for The Washington Post, The Atlantic, The New York Times and other publications.
David Bates is an American-born physician, biomedical informatician, and professor, who is internationally renowned for his work regarding the use of health information technology (HIT) to improve the safety and quality of healthcare, in particular by using clinical decision support. Bates has done work in the area of medication safety. He began by describing the epidemiology of harm caused by medications, first in hospitalized patients and then in other settings such as the home and nursing homes. Subsequently, he demonstrated that by implementing computerized physician order entry (CPOE), medication safety could be dramatically improved in hospitals. This work led the Leapfrog Group to call CPOE one of the four changes that would most improve the safety of U.S. healthcare. It also helped hospitals to justify investing in electronic health records and in particular, CPOE. Throughout his career, Bates has published over 600 peer reviewed articles and is the most cited researcher in the fields of both patient safety and biomedical informatics, with an h-index of 115. In a 2013 analysis published by the European Journal of Clinical Investigation, he ranked among the top 400 living biomedical researchers of any type. He is currently editor of the Journal of Patient Safety.
Thomas G. McGinn is an American physician, Educator, and researcher in Evidence Based Medicine, Clinical Prediction Rules, clinical decision support. McGinn is the EVP of CommonSpirit Health and Professor of Medicine at Baylor College of Medicine
Valerie Ellen Stone is an American physician who is a professor of medicine at the Harvard Medical School. She serves as Vice Chair for Diversity, Equity, and Inclusion, Department of Medicine, Brigham and Women's Hospital. She specializes in the management of HIV/AIDS, health disparities and improving the quality of medical education.
Larissa Nekhlyudov is an American general internist. She is a professor of medicine at Harvard Medical School, primary care physician at the Brigham and Women’s Hospital and Clinical Director of Internal Medicine for Cancer Survivors at the Dana–Farber Cancer Institute.
