All Gessler Clinic patients who have existing appointments are responsible for keeping their appointments. If an appointment must be canceled for any reason, patients must cancel at least 24 hours prior to the appointment time. Effective January 1, 2009, Gessler Clinic, P.A. charges existing patients $30.00, and new patients $50.00, for any appointments not canceled at least 24 hours in advance. Also, it is Gessler Clinic, P.A.’s policy that co-payments be made prior to your appointment.