I am North of Tacoma, but have found different dispensary's do things different ways. I have donated straight to a list, through a dispensary and on "consignment"
There are dispensary's that require coming to your garden to inspect your methods and make sure everything is organic.
The best thing to do is talk with someone from your local dispensary and see if they keep a "list" of people wanting to adopt. It depends a lot on what ladies you have to offer. Reputation also comes into play. Lucky for me, word is good regarding my clones...healthy, bug free, well rooted. Also, keep in mind that when donating to a medical dispensary, all must be organic.
Unless you are willing to stand behind your QUALITY product, don't go there.
Have you checked out Craig's List? I have used Craigs to find strains I was looking for. However, I did get a couple plants with spider mites once. It's good practice when introducing any new plants to your garden to be sure and quarantine so you don't get any surprises. Also, with Craigs...really as with anyone, you are taking the growers word regarding the plant genetics; something to keep in mind.