Here's a few resources you can use:
Doctor referrals from CLDA (This is a referral system for different states, Not just CA)
Turn The Corner
LymeNetFlash Forum
LDA Doctor Referral
MD Junction LLMD Doctor Referral Forum
You might also get good information by joining a yahoo state related Lyme group. Just type in the url:
http://health.groups.yahoo.com/group/ColoradoLyme
but change "Colorado" to whichever state you are in. You will see Yahoo ask if you want to join the group... just say yes, and your on your way.