Allergy & Immunology (Allergist/Immunologist) - Trained in the evaluation, physical and laboratory diagnosis and management of disorders involving the immune system.

Anesthesiology (Anesthesiologist) - Trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure.

Cardiology (Cardiologist) - Specialized in diseases of the heart and blood vessels and manage complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms and determine appropriate treatment.

Dermatology (Dermatologist) - Trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases.

Emergency Medicine - A physician who specializes in Emergency Medicine focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department.

Endocrinology (Endocrinologist) - Concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands.

Family Practice (Family Practitioner)/General Practice (General Practitioner) - Concerned with the total healthcare of the individual and the family and is trained to diagnose and treat a wide variety of ailments in patients of all ages.

Gastroenterology (Gastroenterologist) - Specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder.

Geriatrics (Geriatrician) - Has multidisciplinary training of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly.

Hematology (Hematologist) - Specializes in diseases of the blood, spleen and lymph.

Internal Medicine (Internist) - Provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly.

Nephrology (Nephrologist) - Treats disorders of the kidneys, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function.

Neurology (Neurologist) - Specializes in the diagnosis and treatment of all types of disease or impaired function of the brain, spinal cord, peripheral nerves, muscles and autonomic nervous system, as well as the blood vessels that relate to these structures.

Obstetrics & Gynecology (Obstetrician/Gynecologist) - Possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and related disorders.

Oncology (Oncologist) - Specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors.

Ophthalmology (Ophthalmologist) - Has the knowledge and professional skills needed to provide comprehensive eye and vision care for patients of all ages.

Otolaryngology (Otolaryngologist) - Provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper ailmentary systems and related structures of the head and neck.

Pathology (Pathologist) - Deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences.

Pediatrics (Pediatrician) - Concerned with the physical, emotional and social health of children from birth to young adulthood.

Physical Medicine and Rehabilitation (Physiatrist) – Concerned with diagnosing, evaluating and treating patients with physical disabilities.

Psychiatry (Psychiatrist) - Specializes in the prevention, diagnosis and treatment of mental, addictive and emotional disorders such as schizophrenia and other psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders.

Pulmonology (Pulmonologist) - Treats diseases of the lungs and airways.

Radiology (Radiologist) - Utilizes imaging methodologies to diagnose and manage patients and provide therapeutic options.

Surgery, Colon & Rectal (Colon & Rectal Surgeon) - Trained to diagnose and treat various diseases of the small intestine, colon, rectum, anal canal and perianal area by medical and surgical means.

Surgery, General (General Surgeon) - Has expertise in the diagnosis and care of patients with diseases and disorders affecting the abdomen, digestive tract, endocrine system, breast, skin and blood vessels.

Surgery, Neurological (Neurological Surgeon) - Provides the operative and non-operative management of disorders of the central, peripheral and autonomic nervous systems.

Surgery, Orthopaedic (Orthopaedic Surgeon) - Trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means.

Surgery, Plastic and Reconstructive (Plastic & Reconstructive Surgeon) - Trained in plastic and reconstructive procedures within the head, face, neck and associated structures, including cutaneous head and neck oncology and reconstruction, management of maxillofacial trauma, soft tissue repair and neural surgery.

Surgery, Thoracic & Cardiovascular (Thoracic & Cardiovascular Surgeon) - Surgically treats diseases of the chest, heart, and its blood vessels.

Surgery, Urological (Urological Surgeon) - Manages congenital and acquired conditions of the genitourinary system and contiguous structures including the adrenal gland.

(Source: ABMS Guide to Physician Specialties)