This study used a multiple linear regression model to examine the influences of baseline HbA1c level on CGM based FBS reading and PPBS reading among 237 enrolled in Fitterfly Diabetes program. CGM-FBS reading was found to be significantly associated with HbA1c. CGM-PPBG reading was found to be significantly associated with HbA1c. HbA1c values along with baseline parameters can help in prediction of FBS and PPBS readings on a CGM device, thus helping in more informed use of CGM sensors.