"It would depend on the disagreement. If the disagreement was with a senior fellow, I would defer to their opinion as they have more experience than I do. However, if I was concerned that they were making the wrong decision regarding patient care or providing subpar patient care, I wouldn't hesitate to discuss it with them respectfully. If necessary, I would go to the chief resident. For more serious issues, such as ignoring patient care responsibilities, I would go directly to the attending physician because these actions, or inactions, would be done under the umbrella of the attending's medical license."