Yes, thought the same but have a quick look at this: https://scholar.google.com/citations?hl=en&user=WLN3QrAAAAAJ&view_op=list_works&sortby=pubdate Seems about right? But yeah, must be advising lots of students or something. He is rarely the first, second or even third author on the papers.
https://www.youtube.com/watch?v=dKYT6NzsUZQ