Car Accident Injury Relief!. I was involved in an auto collision in 2008, which left me with pain and stiffness in my neck and upper back. I went to Dr. Oncken, because I have clients that have gone to him and they have always gotten great results. Sure enough, within a few months of beginning treatment, my symptoms improved and I was released from active care. Dr. Oncken is not your typical chiropractor. There are no gimmicks and no pressures. He is a results oriented medical professional and I would recommend him to anyone.