we have a few patients with a reputation for lateness. we try very hard to stay on schedule, and the flow of the office is definitely better when patients show up on time. so when we make appointments for this select group of patients, we tell them their appointment is 15 minutes earlier than it actually is. we give them a fake appointment card. so i always feel slightly guilty when i see them signing in, ten minutes late for their false appointment time, but five minutes early for me. emphasis on slightly.