Register

Yes - you will be charged the full monthly membership when you first register. However, your second month will be prorated - this means that if you signed up on the 25th of the month your first invoice will include the charge from the 25th - 25th and the second month invoice would only include the prorated charge for the 26th - end of month. 

If you require an initial evaluation you will register for the service you are interested in and when you are scheduling your first office visit you will make a note that an initial evaluation is needed. This will prompt the system to charge the initial evaluation fee. Given that you have already paid your monthly membership, you will not receive a bill for your second month.