academic salaries >900k. outside of california, how common is this compensation set-up?

i see some ucla heme-onc attendings making over 900k/yr. not anything special, regular assistant / associate professors. how is it possible to get academic positions paying this much? i hate cali but am wondering how regular this sort of thing is in academics. funny looking at the thread pcp vs hem onc and looking at these salaries lol.

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academic salaries >900k. outside of california, how common is this compensation set-up?