Finally something I can post intelligently about ! Yes we doctors do suffer from fatigue both acute and chronic. The key is managing ones routines and practices to minimize mistakes: follow checklists, acquire good habits while in training and never be afraid to ask for help from colleagues when fatigued.
The "hero doctor syndrome" has been summarily shot down as a poor way to manage stress.
These routines were all acquired from our aviation colleagues! A lot of the mindset is similar, and the hard won lessons still apply. Our training has gradually become more humanized (hours are less) and patient safety has gone up accordingly.