On the North Side, the Ravenswood Family Practice was pretty good. They have plenty of ODs, they can split up the MMR if that's the route you're going, and the physicians we saw were always respectful of our choice not to vax.
Since moving to the burbs, I've found the IHC website very unhelpful. Many of the practices listed were not accepting new medicaid patients, some had been closed for years, etc. Luckily I found the right practice for us through a recommendation from another mama.