Hi Collette!
I'm not an insurance expert and I don't know if there's a VA industry group insurance option, but I do just want to tell you a small startup I used to work for used Trinet for their HR and benefits. (
http://www.trinet.com) Same concept - it pooled lots of small businesses together so it could offer good insurance and other benefits.
I'm curious about this, too, so I'll be watching this thread. Thanks for asking this!