if either you or your spouse is uninsured and your income is sufficiently high (which it probably is) then you or your spouse will face a penalty. however if you are covered under your spouse's plan or vice versa then you are fine. no penalty.
i am married and my spouse and i both have full-time jobs and health insurance through our employers. can one of us opt out of our insurance without being penalized or taxed? what if our employer is the same?