A physician is a medical doctor, also called MD, or doctor of medicine, that provides healthcare to patients. A physician is not just trained but also licensed as medical practitioner to practice the science and the art of medicine.
A physician can be a primary care provider or a specialist.
Primary care provider: is a physician (M.D. – Medical Doctor or D.O. – Doctor of Osteopathic Medicine), nurse practitioner, clinical nurse specialist or physician assistant, as allowed under state law, who provides, coordinates or helps a patient access a range of health care services.
Specialist: is a doctor or other health care professional who is trained and licensed in a special area of practice. Examples of medical specialists include oncologists (cancer doctor) and hematologists (blood doctor).
Anesthesiologists focus on the care of surgical patients and on pain relief. They administer drugs (anesthetics) that reduce or eliminate the sensation of pain during an operation or another medical procedure. During surgery, they adjust the amount of anesthetic as needed and monitor the patient's heart rate, body temperature, blood pressure, and breathing. They also provide pain relief for patients in intensive care, for women in labor, and for patients suffering from chronic pain.
Cardiologists diagnose and treat diseases or conditions of the heart and blood vessels, such as valve problems, high blood pressure, and heart attacks. Cardiologists may work with adults or specialize in pediatrics (typically newborns through age 21). Although they treat many of the same disorders in either population, cardiologists in pediatric care focus on conditions that patients are born with rather than on those that develop later in life.
Dermatologists provide care for diseases relating to the skin, hair, and nails. They treat patients who may have melanoma or other skin cancers. They may offer both medical and surgical dermatology services.
Emergency medicine physicians treat patients in urgent medical situations. These physicians evaluate, care for, and stabilize patients whose illness or injury requires immediate attention. Unlike many other physicians, who often choose to specialize, most emergency medical physicians are generalists.
Family medicine physicians are generalists who address health maintenance and assess and treat conditions that occur in everyday life. These conditions include sinus and respiratory infections, intestinal ailments, and broken bones. Family medicine physicians typically have regular, long-term patients, who may include all members of the same household.
General internal medicine physicians diagnose and provide nonsurgical treatment for a range of problems that affect internal organs and systems such as the stomach, kidneys, liver, and digestive tract. Internists use a variety of diagnostic techniques to treat patients through medication or hospitalization. Their patients are mostly adults. They may specialize, such as in gastroenterology or endocrinology.
Neurologists diagnose and treat those with disorders of the brain and nervous system, such as Alzheimer’s disease, amyotrophic lateral sclerosis (ALS), and epilepsy. These physicians may specialize in one or more conditions, or they may work as pediatric neurologists to diagnose and manage the care of children with autism, behavioral disorders, or other neurological conditions.
Obstetricians and gynecologists (OB/GYNs) provide care and counsel to women regarding pregnancy, childbirth, and the female reproductive system. They also diagnose and treat health issues specific to women, such as cervical cancer, ovarian cysts, and symptoms related to menopause.
Ophthalmologists diagnose and treat conditions of the eye. Treatment may include surgery to correct vision problems or to prevent vision loss from glaucoma and other diseases. Ophthalmologists also may fit eyeglasses, prescribe contact lenses, and provide other vision services.
Orthopedic surgeons diagnose and treat conditions of or injuries to the musculoskeletal system, which includes bones, muscles, ligaments, and tendons. They may specialize in certain areas of the body, such as the foot and ankle, or in a particular type of practice, such as sports medicine.
Pathologists test body tissue, fluids, and organs and review test results to diagnose diseases. These physicians may choose specializations that include clinical pathology, which focuses on laboratory analysis of bodily fluids, and anatomical pathology, which focuses on examinations of tissue and other samples acquired through autopsy or surgery.
Pediatricians provide care for infants, children, teenagers, and young adults. They specialize in diagnosing and treating problems specific to younger people. Most pediatricians administer vaccinations and treat common illnesses, minor injuries, and infectious diseases. Some pediatricians specialize in serious medical conditions that commonly affect younger patients, such as autoimmune disorders.
Pediatric surgeons diagnose, treat, and manage a variety of disorders and diseases in fetuses, infants, children, and adolescents. These surgeons collaborate with physicians involved in a child’s medical care—including neonatologists, pediatricians, and family medicine physicians—to determine the best treatment options for the child.
Psychiatrists are primary mental health physicians. They diagnose and treat mental illnesses through a combination of personal counseling (psychotherapy), psychoanalysis, hospitalization, and medication. Psychotherapy involves psychiatrists helping their clients change behavioral patterns and explore past experiences. Psychoanalysis involves long-term psychotherapy and counseling. Psychiatrists may prescribe medications to correct chemical imbalances that cause some mental illnesses.
Radiologists review and interpret x rays and other medical images, such as ultrasounds, to diagnose injuries or diseases. They may specialize, such as in diagnostic radiology, which involves reviewing images and recommending treatment or additional testing, or in interventional radiology, which includes diagnosing patients and treating them with minimally invasive techniques.
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