Map for NOWDiagnostics, Inc. Map for NOWDiagnostics, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Advertising & Media >> Medical Diagnostics NOWDiagnostics, Inc. 1200 Stewart Pl.Springdale, AR 72764 | directions (479) 966-4530 | fax: (479) 927-6383 Visit Site If your business isn't here, contact us today to get listed!