the canossa package is around 3-4K for the first 1.5 years. that should covers all required vaccinations. and then on top of that, we've been to the doctor quite a few times, i'd say around 8 times the first year (our doc is around $450 each time). of course each kid is different, and some go a lot less than we do, and being the first year, we're always more nervous and go to the doctor a bit more than it's really necessary.
however, one thing to consider is if you want to take the private route in case of emergencies and hospitilization, i'd think it'd be worth the insurance, but in some cases, i think hospitilization and outpatient might be under different plans.