Reproductive endocrinology and infertility (REI) is a subspecialty of obstetrics and gynecology (OB/GYN). Reproductive endocrinologists are OB/GYNs who are capable of managing complex problems relating to REI, according to the American Board of Obstetrics and Gynecology (ABOG). These physicians...

Oculofacial plastic and reconstructive surgery (OPRS) is a very specialized form of ophthalmology that focuses on the face, eyelids, brow, orbital bones, tear duct system, and nose. During a two-year fellowship, surgeons are trained in aesthetic and reconstructive facial surgery.

Occupational and environmental medicine (OEM), sometimes referred to simply as occupational medicine, is a clinical and population-based medical specialty devoted to the prevention and management of occupational and environmental injury, illness, and disability, as well as the promotion of the...

Endocrinology is the subspecialty of internal medicine and pediatrics concerned with the diagnosis, treatment, prevention, and investigation of disorders of the endocrine or ductless glands and other metabolic systems. The endocrine system includes the hypothalamus, thyroid, pancreas, adrenal...

Clinical cardiac electrophysiology (CCEP) is the subspecialty of internal medicine focused on the treatment of patients with complex heart rhythm or conduction abnormalities (i.e., problems with the heart’s electrical system). Clinical cardiac electrophysiologists treat patients with conditions...

The American Board of Medical Specialties (ABMS) defines physical medicine and rehabilitation (PM&R), also referred to as physiatry or rehabilitation medicine, as the medical specialty concerned with evaluating, diagnosing, and treating patients with physical disabilities. According to the...

According to the American Dental Association (ADA), hospital dentists treat patients with medical conditions and disabilities. They offer a variety of care ranging from general dentistry and hygiene to specialty care, such as dental implants. In general, hospital dentists work in hospitals and...

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