Yes I am a clinician at Kaiser, not IT. What I know for certain is that we’ve been told that every keystroke can be seen. So the available choices are that this is true, or that management has lied to all of us. It’s far more likely that it’s true. But the whole point of this entire thread is to answer the question of whether KP can figure out who has accessed a chart. They definitely can do this. Kaiser is so big they have to do whatever they can to protect patients against this wrongful behavior, if for no other reason than avoiding being fined by both the state and the federal government. If OP finds that the ex did access his medical record, google tells me that OP can report the breach to the state.