this is certainly possible, i know a former resident doing this currently. he is joining a large nonacademic group, he will see _mostly_ MD, do DBS, botox etc, in a fairly large city/hospital. he'll essentially be the MD guy in that group but see some general neuro as well. more and more neuro residents are going into fellowships which are not just helpful for academia anymore...in well populated areas, larger groups of neurogists are actively recruiting people with this expertise. just take a look at the ads in the green journal. it's possible, with movement disorders it may be less common currently, and less lucrative potantially than EMG etc, but this person i know is being paid very well. as the required knowledge base for each field continues to grow, and as there are more neurologists available out in the community, the demand for private subspecialists will grow. in fact, i think patients will demand it in some instances-i.e. wouldn't you rather go to a MD doc if you had Parkinson's or MS doc if you had MS? there will still be a demand for general neurologists in many underserved areas as well.