I have Southern California Kaiser. I've had Kaiser for decades - first in Northern CA, where I lived at the time, and now in Southern CA (they are two separate organizations.) But it is Southern California you asked about, which I've had about ten years. They are excellent for straightforward medical issues, their emergency room care is great, and they are very on top of preventive care. Plus the value of not having to quibble endlessly over bills the way you do with other plans is inestimable. I've had excellent care from them in the past for a variety of issues, none of them hugely serious, and my ex-husband had surgery there.
Everything I just said goes out the window once you have CFS and are trying to get care for it. If there's a doctor in all of Southern California Kaiser who knows a damn thing about CFS, I have yet to find him or her. They almost seem to have a hive mind mentality about it - their party line is that they believe it is a real disease, but this statement is always followed by "but I don't know anything about it." They all want it to be the other guy's problem, only there is no other guy.
Only good things I have to say about being a CFS patient with Kaiser: copays on meds are cheap (I don't insist on anything exotic or non-generic); they did a VERY thorough job ruling out other conditions before I got the CFS diagnosis and it happened pretty fast (none of that taking years to get all other conditions ruled out, for me it took about four months); my premiums remain affordable (I bought an individual plan since my former employer didn't provide benefits, and the premium is amazingly affordable, and there were no shenanigans about trying to boot me when I went from really healthy to really sick); and I have a kick-ass physical therapist, who actually reads up on the literature and knows what he's doing. I had some trouble at first getting approved for physical therapy - I think they didn't want to approve it "just" for CFS - but when I complained of neck and back pain (true, and it was excruciating) I got the go-ahead. And that way I got in the door to some good overall management of my energy envelope stuff as well as the specific PT for neck, shoulders, other parts that trouble me because of what my fatigue does to my biomechanics.
I've never heard much good about other SoCal health insurers either, nor have I found a CFS doctor in SoCal that I'd care to go to. Chia in my opinion is too focused on enteroviruses.
All of this discussion may be completely moot since if you have CFS, you have a very serious pre-existing condition, and you said you have an individual plan. I believe you will find you are no longer insurable on the individual plan market. Pre-existing conditions will continue to be cause for denial of new insurance plans to individuals until 2014, unless the ACA gets gutted first, in which case "2014" becomes "never."
If your issue is that you are not happy with your doctor, you are more likely to be able to switch doctors than to switch plans. Even if you don't find a CFS expert, which are rare as hen's teeth, you may be able to find someone you like better who will work with you more effectively.
(p.s. Also be careful if you ever want to switch plans *within* your same insurer - say they offer a menu of different plans and you see one that seems more affordable or whatever. Read the fine print: sometimes you will have to re-qualify medically to change plans, just as if you were a toally new customer, and sometimes you won't, depending on the details of the plans. Kaiser actually has a chart that makes this semi-comprehensible if you look at it real hard for a while.)