Finally there is a .gov website that I personally find useful. I'm sure many parents can as well.
It's called Insure Kids Now (insurkidsnow.gov). Wonderfully designed to find SCHIP health or dental providers for children. You can find providers, again, be it health or dental, in all states. It's searchable by your address, by your plan, provider and more.
It's super easy to navigate and extremely user friendly.
If you happen to be searching for a dental provider for instance NOT associated with FORBA's Small Smiles Clinics, then search for a provider and check the name of the dentist against the address of any of these places in your area; Small Smiles, Children's Medicaid Dental, Oklahoma Smiles, Indian Springs Dental, or Wild Smiles
You can also check the address of Kool Smiles, Ocean Dental or Adventure Dental and Vision.
I think parents will find there are several dental providers in their area who will accept Medicaid without resorting to taking your child to a so called 'dental mill'.