There are quite a few in WA, though I'm not sure which ones are still actively breeding. I got mine from Skylocke in Toledo, WA but I don't think she is breeding anymore.
There's MyDobes (Marty Young), but I don't think she is breeding anymore. She is involved with NW Doberman Rescue though.
There's Wyndem - Mary Leahy - in Brush Prairie.
There's a 'few' in the Seattle area.
You can start with the DPCA referral list for WA state.