Jokerette-- In my hospital, they had us fill out the forms for social security right there in the hospital. That was convenient. The dr's took my insurance card in lieu of his until he got his own, which admittedly took awhile. But like Guppy said, they were very understanding as that's how it always happens.
We had to go to the office of records in order to get a birth certificate and it cost $15, I think. Which is ridiculous, if you ask me. For a duplicate, okay, but shouldn't the first one be free? It's my own kid, for crying out loud. Anyway.
And I got a couple bills from the hospital after the birth, for DS's circumcision and stuff, and it freaked me out. But of course all you have to do for that is fill out the insurance info and send it back.
Trying to think what else you have to do... Before you go in, you should have picked a pediatrician, obviously. I called DS's early on and they said all I had to do was tell the hospital staff when I went in that that's who I wanted. But I suppose it differs depending on the dr.
And-- yay!!-- we all get a tax deduction next year!! You might want to change your exemptions at work.
That's all I can think of for right now...