Psychopathy is present in all professions. In The Wisdom of Psychopaths: What Saints, Spies, and Serial Killers Can Teach Us About Success, Kevin Dutton provides a side-by-side list of professions with the highest (CEO tops the list) and lowest (care-aid) percentage of psychopaths. Interestingly surgeons come in at #5 among the professions with the highest percentage of psychopathy while doctors (in general) are listed among the lowest.
Although by no means a scientific study, Psycopaths, by their very nature, seek power and it would make sense that a psychopath among us might pick surgery over pediatrics or pathology as they are drawn to power, prestige, and control. Be this as it may the incidence of psycopathy or psychopathic traits in doctors of any specialty is low. Statistics indicate that no more than 1% of men in general exhibit psychopathic traits. In Women these characteristics are far less.