If you wish to change the display name please follow these steps. The original provider name will still remain and the reports will be generated by the provider. 

Go to Schedule Manager

Click on Setup Providers

Click on the Provider you wish to change the display name

Click on the "Edit " button in the top left of screen

Edit the Display name field in the box that opens

Click Save & Close button in the top left corner to complete the change.

Now go to View Schedule to review the edit.