AS Biscuit mentioned, ask around.....do a small survey of people you meet in the area....CG staff, People in stores or at the gas station. Depending on the size of the community, you may find the same name mentioned (with a good review) several times.
Then, you can check the websites, and call around.
I've had several dental emergencies while working on the boat....and would just try and locate the closest Dentist....maybe I was lucky, but I never had a problem with any of them. Most of them would be out of business, if they were unethical or caused problems for patients.
Good luck