Email is certainly the best way to get a hold of me these days. I have a cell phone, of course, but the overwhelming tide of robo-callers these days has broken my faith in the phone call as we once knew it. Also I hate voicemail, it's terrible.
For what its worth, my cell is 510-685-6020
If you want to get some quick results you can email me at firstname.lastname@example.org or leave me a little note to the right over there.