I have seen Levine and Natelson. Levine treated me for elevated EBV & HHV 6, but only AFTER I asked her to. I agree with the above comments that you have to basically suggest to Levine what needs to be done or tested and you can't rely on her taking charge at all. Natelson does research, but doesn't test for everything and his lab at Beth Israel lost or screwed up my results SEVERAL times & I had to go all the way to NYC (2 hours) to have the blood drawn again because Natelson wouldn't accept any other labs results!!!. My CSF was abnormal, which he says he's seen in 30% of his patients and this puts us into the "neuro" category. He couldn't offer any treatments for me, but made sure to tell me he needed more patients and asked me to refer my friends or family to him!! I think he's a great researcher, but doesn't offer much in the way of treatment. Appointments with him are very rushed and he types his notes the entire time he's talking to you so I never really felt like he was listening to me. I am grateful to both doctors for the limited test results I received because at least I have some information that I didn't have before I saw them, but as far as treatments go, I've been out of luck.