DAVID A. HALL, DDS, AAACD, graduated with honors from the University of Minnesota School of Dentistry and ran a private practice in Cedar Rapids, Iowa, for many years. In 1995, he launched a website promoting his own dental practice. After requests from other dentists for help with their websites, he founded Infinity Dental Web in 2009, a marketing agency that does digital marketing for dentists. Dr. Hall may be contacted at (480) 273-8888.