The Law Office of Dennis L. Beckley 401 Chez Paree Dr, Hazelwood, MO63042 The Law Office of Dennis L. Beckley is a legal firm based in Hazelwood. Serving clients in the St. Louis County, Mr.…More Beckley offers general law practice services. He specializes in the areas of personal injury, criminal defense and DUI and traffic violations, among others. Mr. Beckley is a graduate of the University of Missoury. For more information on him or his office, please call the listed number.