If anyone needs a root canal or like procedure. Dr. Johns IS the best in the Phoenix area. Driving to Sun City is worth it when you consider the care and treatment you will receive from this Dr and staff. Dr. Johns is an expert in his field with decades of experience. His assistants are all very well trained, friendly and knowledgeable, the office staff is professional, helpful and curtious. This is the only dental-type office I have ever actually felt comfortable visiting.