Read the policy CAREFULLY.
Then, find out whether California law requires them to convert it to an individual policy if you're no longer a member of the group (as most states do when it's COBRA or a direct separation from employer-sponsored insurance).
If your choice is between that and nothing (as I know it is for most people), then it's obviously worth looking into. But I think if there's any way you can afford the COBRA, it's best to go with that.
Speed comes from what you put behind you. - Judi Ketteler