There are therapists out there who do specialize in bpd as well as other things. They may list things like depression and anxiety for the insurance companies, but treat a variety of issues. If you find a therapist who doesn't accept your insurance you can still go and pay out of pocket; sometimes the therapist is willing to reduce their rate when they don't have to spend time and money on insurance forms, phone calls, etc.

Also, if you find a therapist who works with bpd, but doesn't take your insurance or they aren't taking new patients, you can call and ask them for a referral to a colleague. She knew of others who could help and said that therapists sometimes will issues they specialize in that the insurance companies will approve. My therapist was going to do this but I chose to pay out of pocket. I really like that I don't have to bother with insurance at all, that the insurance company is not butting in

Maybe this will help:
http://therapists.psychologytoday.com/rms/:
You can search by "Personality Disorders" or by individual symptoms like depression, anxiety, etc.

The good news about bpd is that you can grow right out of it