I had a look in my latest Anchora and it looks like DG at Stanford is closed. It's a shame.
They have other "Silicon Valley" area chapters at Santa Clara University and San Jose State University.
If you wanted to find out when they closed and if they are re-colonizing at all, I am sure that if you contacted the
DG alumnae chapter of Palo Alto (where Stanford is), they could probably share more insight with you!