I am interested in this topic as well. On other threads, it was suggested that board-certified neurophysiologists, even with little-to-no intraoperative monitoring training, could get IOM jobs, and the companies hiring them would train them. From what I understand, hospitals require ABPN Neurophysiology or Epilepsy certification for IOM, hence companies are willing to hire and train such physicians. Is this accurate? I don't believe PM&R physicians can be newly-credentialed to perform IOM anymore; those who are doing it must have been grandfathered in in the distant past (again, please correct me if I'm wrong).