Select your cohort and follow the directions. Your cohort is your expected month and year of graduation from the program. Fall 2025 Cohort 0527 Cohort 1226 Cohort 0526 Cohort 1225 If you need assistance: Live customer service agents are available Monday – Friday, 6 am to 9 pm Central Time. Phone: (800) 667-7531 How do I contact ATI Customer Service (atitesting.com) … Continue reading ATI Payment Codes