The Collaborative International Dictionary of English v.0.48:

Neurologist \Neu*rol"o*gist\, n.
   One who is versed in neurology; also, one skilled in the
   treatment of nervous diseases.
   [1913 Webster]

WordNet (r) 3.0 (2006):

neurologist
    n 1: a medical specialist in the nervous system and the
         disorders affecting it [syn: neurologist, brain doctor]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "neurologist":
   anesthesiologist, cardiologist, chiropodist, dermatologist,
   eye doctor, eye-ear-nose-throat specialist, geriatrician,
   gerontologist, gynecologist, immunologist, internist, neurology,
   neurosurgeon, obstetrician, oculist, ophthalmologist, orthopedist,
   otolaryngologist, otologist, pathologist, pediatrician, pediatrist,
   podiatrist, psychiatrist, radiologist, serologist, skin man,
   specialist