DD (now 8, in 3rd) is gifted with a high functioning autism diagnosis. I would say if it's office visits for discipline, even talking about weekly rates means there are too many. If the visits are for something else, but aren't productive, then they should be changed in some way to make them productive.
Based on our experience I'd say ongoing disciplinary office visits in general should not be normal. When this was happened to DD, it was mostly because the staff were all a terrible fit. Sure, they liked DD, they were nice enough people, on the surface they talked the talk and had lots of experience... but they didn't really get her, and they didn't really try hard enough to get her. They just kept blindly adding more and more and more crap to the IEP without adjusting for the fact that she was also gifted and bored out of her mind.
