Health insurance is $550 a semester here at Nova. That is just for me, i don't know what their family plans are like, just thought this might give you a ballpark figure. The provider is Aetna and i have found their coverage to be excelent.
Insurance warrants investigation, make sure that you are covered the way you think you are. I too am at Nova and had the Aetna plan last year. I got screwed. $12k out of pocket. I have been much happier with the insurance offered through ASDA. It costs less too, I think I paid just over $700 for an entire year.
As far as coverage for a family goes, I know many students with families get insured through a spouses employer, or if the spouse isn't working they often qualify for government insurance for the children.