I grew up in Kaiser. My dad was a department chief there. That was in the bay area.
I spent a lot of time listening to complaints growing up from my peers and their parents.

So far as I can tell, the biggest issue is that they are a big company and work out of big office buildings and therefore are not as personal. You have to get a referral. They don’t recommend holistic or alternative treatments. I once listed to a roommate explain to me how Kaiser had killed his father by taking him off a macrobiotic diet. Now I am of the opinion that eating organic sprout sandwiches was unlikely to cure his colon cancer but his frustration was that he did not feel listened to.

Thats a legitimate gripe (though I am not sure how it can be safely addressed).

However, I am willing to (as I suspect most consumers are) forgo seeing my specific physician in favor of seeing someone today or right away.

What are other gripes people have?
I am curious to hear.