I can't say enough wonderful things about Suzanne Thomson at New Life Midwifery. As a doula, I will say that to me she epitomizes the midwifery model of care. She was my midwife for the birth of my second child last year and she was just amazing.
Beth Coyote at Rainy City Midwifery is also highly recommended. I know a lot of folks who have been very happy with her.
Sally Avenson is a very experienced and very busy CNM but has privileges as Swedish Ballard as well as Group Health, which is a pretty rare thing anymore. I've attended multiple births in homes and hospitals with her and while she does take a more medical approach she is very skilled and doesn't intervene unnecessarily.
Worth noting: in general, if you plan a home birth but need to transfer in labor, you will wind up at UW Medical Center because none of the other hospitals will take home birth transfers (Sally can transfer clients to Group Health once labor has started). I know that nobody who plans a home birth likes to consider that possibility but speaking as someone for whom that happened twice I think it's good to consider. I'd be happy to talk to you more about my experiences there as a doula and as a client if you're curious.
When the time comes, I can also recommend a really fabulous doula! (No, not me! The one I hired for my last birth. Her name is Rebecca Shepherd and she was the best!)