if you haven’t checked the Job Listings Thread 👨🔬, you could start there.
only see a couple of current listings for Illinois in there atm.
all states have a list of all licensees, it might take a bit of digging to get from that list to a phone number, or it might not.
pretty sure there is also a list around here that points to the appropriate resources for many states, but it shouldn’t take much to dig up the list for Illinois (or any state with a Rec program).