The waiting. I waited an hour for a recheck with a surgeon. He came in, spent maybe 2 min. looking at my scar, said "you're healing nice", had his hand on the door to leave when I had to stop him to ask a question. Fastest answer he could give and then he was gone.
There is one doctor (my chemo doctor) who is absolutely wonderful! I always have to wait, but that's because she spends so much time with her patients, never rushes you, takes her time to explain everything, even provides some moral support when I need it. She's fantastic!