Texas has laws on the books to throw people in jail for up to six months for first-time DUI.
Measles is diabolically contagious and there's a good chance he will be personally responsible for a death. I think a doctor who knows better and who recklessly endangers lives in the way he's done should be looking at a minimum of a year of his life where he gets to see sunlight for no more than 30 minutes a day.
Personally I'd make the penalties for DUI much MUCH harsher, given how many people are killed each year as a result. Driving is a privilege, not a right, much like practicing medicine.