Your accountant is balking at the notion that the ID numbers for federal and state purpose have **different numbers of characters**???
C'mon, John, read the signs: Sounds like your accountant might not have done his homework and studied the elections available to LLCs, especially the one whereby an LLC chooses to be taxed as if it were a corporation, and *also* - right there on the very same form (and, FYI, it's *not* Form 8832) - elects to be taxed as an S corporation. And he's worried that he won't be able to bill you for the time it's going to take him to get up to speed on the choices that LLCs can make about how they're taxed.
Okay, it's not really as simple as it sounds, overall, but the "dual" election is made on Form 2553, and it's due by March 15th of the current year. You might want to read up on the requirements to be eligible to be an S corporation to be sure your LLC toes the line in that respect.
And there are only nine digits in the federal ID number, not twelve, where I come from. Dunno 'bout California: everything is different back there.