Map for Roy Davis Map for Roy Davis Search | Advanced Search | New Members | Coupons and Discounts | All Categories To ensure the technician can contact you, please enter your email accurately and consider adding your phone number in the message body. Advertising & Media >> CSIA Certified >> Iowa Roy Davis 2920 Prairie Du Shien Rd NEIowa City, IA 52240 | directions (319) 337-3953 To ensure the technician can contact you, please enter your email address accurately and consider adding your phone number in the message body.