I have used this chiropractor since 1992 and I can state unequivocally that he is the most knowledgeable (and best) chiro I have ever used. (Even though I have now moved out of the area I continue to route my trips through Illinois just so I can make an appointment for treatment w/Dr. Dan.) He is excellent!! He truly cares about the health and well being of his patients. His knowledge of the way the muscles, bones, and body works is really quite amazing. His office has some very early hours so that patients can receive treatment even before they go to work.