Running a group or a hospital, unfortunately, requires a significant bureaucracy. The doctors are needed to make that run, which means a responsibility to the clerical drudgery involved. This means meetings--lots of meetings. And they're always at night or--worse--during office hours that can cut into your income. Note that the question doesn't ask whether your attendance will be good, but how it has been in the past. This implies that your answer may be verified by a phone call or two, so tell the truth. (Most likely, no one will be checking up on your answer, so even if you've been truant in the past, pledge to do better.)
Our sample answer is of someone who has not been in regular attendance in the past.