Shoot, I dunno.
Uh, gee, I don't actually know Massachusetts licensing law. And I don't know about your state's licensing issues for commercial drivers and ambulances and the like. Hell, Ambo Driver would likely know as much or more.
But I think that I would just go to the source, and ask the Massachusetts Registry of Motor Vehicles about it. (Note: While I should stab myself 28 times in head with a spoon if I were to desire Texas to be anything like Massachusetts, I do think that it's high time that this state got off its duff and administered driver licensing and vehicle registration through the same office. It can be done! Put it all under TXDOT, and realize economies of scale.)
From what I can see, you're looking at a mandatory suspension of your driver license for a conviction of Driving Under the Influence, with a hefty reinstatement fee required. We here at Better & Better Central are very much in favor of the Automatic License Revocation program developed in this state.
That said, we are also in favor of not paying for your damned welfare check, or for your room and board at the Graybar Motel, so check into the possibility of something called an Occupational License. I'll just bet that you've got 'em in Massachusetts. Occupational licenses let you drive to work, and on the job. They have strict guidelines as to when you can drive.
I'm highly in favor of Occupational Licenses, because they let you maintain your livelihood, at no expense to me, and with minimal danger to me. Most people (with a few notable exceptions) won't drink and drive on the job. Especially ambulance drivers. They run a little too closely with the cop crowd, and also rub elbows with the firefighters and docs and nurses, who often have no sense of humor about such things. So ambo drivers, while by reputation a rowdy bunch, generally do their beer-swillin' after hours, which we here at B&B Central are utterly fine with... so long as you're not driving drunk.
Look into it. Save your job. Stay off welfare. And check out Sam Adams' new Imperial Lager-- it's awesome.