I did that once years ago when dr always had you return to pull stitches. Was near an hour past on an early appointment when they finally told me the Dr hadn't even shown up to the office yet. :wtf: They wanted me to reschedule. I told them not happening, left and had the Mrs do it.
This surgery there was nothing to follow up on for the incision. He stitched internally and glued outside. No dressing or anything. When you go in his practice there is a board up showing each person and if they are on time or how long the wait is expected. I understand if someone you are seeing gets called into an emergency. Or if it's late in the day start times can creep. But early morning there's really not much excuse.