I am uninsurable because of my pre-existing medical conditions.

However, I am coverable by a group policy, but since I am self-employed, I am not a member of any group.

I have used ehealthinsurance.com with great results in the past. In fact, I used it to enroll a company I used to run in a group policy with Blue Cross. They are essentially an online insurance broker -- but their website is amazing and includes all prices and features of each policy before you decide. It is super easy to understand and use with nothing shady or hidden to trip you up.

They also offer individual policies...