CD Johnson Accounting Solutions: Accounting, Tax, Payroll, Bookkeeping, Consulting, QuickBooks Certified Pro Advisor Consultant, Quick Books Point of Sale POS Retail Solution Provider. Serving Iowa: Ames, Ankeny, Bettendorf, Burlington, Carroll, Cedar Rapids, Clear Lake, Clive, Council Bluffs, Davenport, Decorah, Des Moines, Dubuque, Fairfield, Fort Madison, Iowa City, Johnston, Keokuk, Marion, Marshalltown, Mason City, Mt Pleasant, Muscatine, Newton, Ottumwa, Quad Cities, Spencer, Urbandale, Waterloo, West Burlington, West Des Moines.