smellulater:
Seattle (King County) is likely your best place in WA to be. Seattle City (proper) has reg's that reduce the police effort towards Med MJ growers. Also, be sure to read the latest bill, 6032, signed just this year.
That said, look up "Green Cross, WA" off the web and start there. NO ONE can or should refer you to a MJ friendly MD. WA is not CA, and pressure here from Federal authorities is just as bad as CA. Also, I know of no allowance in WA for ADHD, ADD. Doctors in wa. that I have seen take the laws serious, or want nada to do with the issue and refuse to discuss it. It is a difficult task ahead of you. Find a good doc you trust and can be open with, and who is not a old school prude and tell him/her of your condition.
Dizzy