As a resident you probably had call Q4-7 days, but if you join a group practice the call can be more frequent. It depends on the size of your group and what relationship you may have with your hospital (i.e. whether or not you admit patients). If you are in solo practice, you could be the only one handling the after hours calls from your patients. It also depends on whether or not your practice is consultative. If your practice is mainly EMG/EEG and you do not admit patients, you might not even have any "call," though you might get calls from your colleagues asking for advice.