SSDI Medical Exam

I have an exam with a disability doctor on the 24th, which I am not looking forward to. I'm sure it will be a singularly frustrating experience, as has all the rest of my dealings with SSDI. Does the fact that they've scheduled me for this mean that they don't believe that I really am disabled, or is it, as the Disability Secrets website claims, because I haven't been to see my doctor in a month (though I did have a phone consultation with him two weeks ago, that should count)?