I do not expect to wait. Of course I have something to read (don't leave home without it...) but a wait of over 15 minutes is unnecessary. I am on time. I would expect if I was over 15 minutes late the doctor would reschedule me. I expect the same consideration.

If a doctor's office is running late or has emergencies that occur, then should call those with appointments and tell them so they can schedule accordingly.

I am a customer of the doctor's office and should be treated as such. I cannot imagine most people would return to a service provider (hairdresser, etc) who made them wait an hour.