866-684-9354

I have received call, and robot (robocall) -claims- it is Kaiser Permanente. Reading between the lines of the various comments it looks like:
1. It might be a separate collections agency for KP. Sounds like -sometimes- it is legit.
2. It might be a robocall that is 'spoofing' the KP collections - very common trick by robocallers to -look- like legit call. Sounds like for any number of individuals this is -not- a legit call: either for someone else, or outdated, or incorrect.
3. From all these comments, you can't tell if the one to you is going to be either 1 or 2.
4. So for me, if you are KP patient, check directly with KP (either online or by calling one of their customer service numbers) - and confirm with KP directly.
5. For me, -don't- call this number because it may or may not be legit or a scam.
• Caller: claims KP
• Call type: Debt collector

http://800notes.com/Phone.aspx/1-866-684-9354/3