doctors around here also charge for the appointments that you miss if you havent called within 24 hours of the appointment to cancel it, and they have been know to remove people from their list if the person has not come in at least once during the year. They set that cut off line because most people see their doctors at least once a year for yearly physicals, medication changes, school physicals if they are in any type of school programs , and younger kids usually need their boosters and vaccinations at least once a year depending on the vaccination and their records.