I'm up in Idyllwild, and Palm Springs is my backyard! There used to be an AP group in Palm Desert, but it fizzled out. There used to be a concise parenting group that would meet up at a children's furniture store (sounds weird, but it worked for them) in Indio- I think the store was called JadaBugs. Not sure if they still meet there.
Kissui in Redlands is one of the only local places that sells cloth diapers, carriers, etc.
The ped. issue came up quite a bit in the old AP group; it seemed like no one could find someone good out where you live. We ended up going to Riverside.
You might want to consider joining the Attachment Parents of the Inland Empire (APIE) yahoo group to see if anyone has any additional resources. You can also join Meetup.com and connect with some of the Palm-Springs area moms on there to see if there's anyone they recommend. And there's also the Barefoot Mama's Network in Redlands.
Hope that helps.
"In the depth of winter, I finally learned that within me there lay an invincible summer"