If the annual deductable amount has not been met, the client pays at the time of service. Keep in mind that, if you have medical expenses later in the year, what you paid during the deductable period didn't really cost you, because it just reduced your later expenses by the same amount. If you are destitute, and have no insurance, keep in mind that there are agencies that will work for a very small fee, such as Taliaferro, the county agency. You may find help from church agencies, which can scale down for very low incomes. I have no setup to make credit arrangements.
Payment is due at the time of service.
If you wish to pay by credit card or check on the internet, please do so in advance. Generally, they are once a week. Sometimes this is just for convenience, and sometimes for economy. For example, hypnosis for smoking might be twice weekly, or even daily. It might be bi-weekly for reasons of economy, but your smoking habit might begin to increase in two weeks' time.