I believe this question was answered the other day, and I think the overwhelming response was "no."
No ER doc in their right mind would want to follow a patient for an extended period of time over the course of a hospital stay. You might want to check an outcome, but one cannot function in the everyday dealings of a medical ward while serving as an ER attending at the same time.
In truth, the role of the ER physician is to stabilize the patient or treat them acutely and discharge them within a few hours. You have a patient with an overwhelming sepsis, give them fluids and pressors and things in the ER and ship them to the Medical ICU. That's your job as an ER physician, to save lives in the acute setting, not to continue to treat patients on the medical wards.
By the way, this post has nothing to do with Step II. It might have been better placed in Rotations/Residencies or in the Allopathic section.