Hi Jim, I m sorry I can not help you, but I saw that no one had been nice enough to post to you so I wanted too. I can share with you that I do have a speicialist here that is similar to what you are looking for and it has helped a great deal. I used to live in Washington, love the area, Im in florida now.
Perhaps contacting one of the pain centers for a referral or a pain management firm, sorry I couldnt be more help, good luck., cz