Lapp Chiropractic is the practice of Jeanne Lapp, M.D. and David Marr, M.D. Lapp has been practicing in the Deerfield area since 1987 and specializes in sports injuries. Marr incorporates acupuncture, nutrition, exercise and diet in his treatment plans for patients and also has an interest in sports-related injuries. The practice focuses on lower back, neck, joint pain and headaches and also offers cold laser therapy for carpal tunnel syndrome.