Neuropathology is knowledge of diseases of the brain and nervous system by laboratory and microscopic study of tissue samples. A neuropathologist specializes in diagnosing nervous system and neuromuscular system disorders. This pathology specialist can also act as a consultant to neurologists and neurosurgeons. Diseases of the nervous system are divided into two basic types: congenital (diseases that appear over a period of time) and degenerative (diseases that involve the vascular system or the metabolism, are toxic, or are the result of trauma or inflammation).

Doctor density varies by specialty and location. Washington, D.C. has 6 practicing neuropathologist in Washington.

According to 2005 Census estimates, Washington, D.C. has a population of 550,521. Of this population, 110,240 are under the age of 18 and 66,591 are at or above the age of 65.