In choosing the best doctor, the most important criteria is the ability of the doctor and that is usually reflective of the doctor's training. Experience follows as you want the doctor to have helped your condition successfully with others. inclusion in your insurance plan is important as finances matter (a given.) Lastly, location; unfortunately too many people choose a doctor simply because they are close. Although in today's busy lifestyles convenience is important, it should be the last reason to pick your doctor.