I hope at this point you have been seen. 
You did mention that you arrived early for your appointment - did you factor that into your waiting time? Because arriving early is your option, but the countdown for them doesn’t/shouldn’t start until your actual appointment time.
I say this because I work with pediatric offices and one front desk staff member at an office told me this morning that she got reamed out by a parent who arrived at 9am for a 9:30am appointment and was furious that they wouldn’t see her early. Great you got there early lady, but other people WERE scheduled for 9am!!!
The only thing worse than waiting in a waiting room is waiting for long periods in the exam room - like solitary confinement!!