First you must check the credentials of your veterinarian. Know what the school has graduated and what skills or additional training has been to improve their knowledge. You can try to search online if you have a profile, or try searching locally in some of the sources available. If you have been able to find a veterinarian that you are looking to try to visit. Check the basics such as knowing how many pets are in the waiting room. Make sure your unannounced visit so that you have a real idea of how your dog will be treated in the future.
Similar to dog training, your pet has an important role in the choice of method or technique that can be used and will be effective with them. This also applies in the choice of a good veterinarian, your pet's view is also important. The dogs are great judges of character. They do not have to answer directly, but try to observe your dog to the veterinarian who is considering having. To see if you like the vet or if he is comfortable with the professional. Just watch how he will act with the vet at all.