if you find it i'll be interested too as i have it shipped from scotland or the east coast - haven't had any success finding it in the bay area.
i know you aren't looking for a restaurant that serves it but mention that canteen made a kedgeree yesterday with smoked haddock that was outstanding!
You might want to call
New World Market
5641 Geary Blvd
San Francisco, CA
They have a lot of dried, smoked, cured fish and meats. I believe they have haddock but not sure its the same as finnan haddie.
Otherwise there is always mail order from the link below.