Both groups will use CGM devices and BGM. The CGM device to be used in the study is the Dexcom G4 Platinum Continuous Glucose Monitoring System with modified algorithm. The CGM+BGM group will be instructed to measure the blood glucose whenever a diabetes management decision is made. The CGM Only group will be instructed to only measure the blood glucose (other than for calibration) with a standard BGM meter in certain circumstances and will use a blinded BGM meter at times when a standard BGM measurement is not done. Following randomization, there will be a phone contact during the first week (4 to 8 days following randomization) to address any questions the participant has about the protocol. Follow up visits will occur at 3, 6, 13, 19 and 26 weeks.