Callahan Orthodontics - Richard F. Callahan, D.D.S., Ltd., in Downers Grove, IL, is the areas leading orthodontist serving Downers Grove, Westmont, Clarendon Hills, Naperville and surrounding areas. We specialize in orthodontics, sleep apnea, TMJ assistance and much more. For all your orthodontics needs, contact Callahan Orthodontics - Richard F. Callahan, D.D.S., Ltd. in Downers Grove.