Welcome to the Home of the Doctor With A Heart!. Dr. Bob Armstrong, D.C. is a Chiropractor in Modesto, CA. Besides traditional chiropractic adjusting, Dr. Armstrong specializes in CBP, (Chiropractic Bio-Physics) and gets lasting correction results supported by Pre & Post X-rays for your examination. Call Today for Your Complete Exam & X-Rays. 209-527-CARE (2273)