Google Voice service only has that Caller ID Number service and so your outbound call to a cell phone should display your Google Voice account phone number instead of that "jnelsoninjax".
Is this "jnelsoninjax" displaying at all receiving end? Such as cell phones with various cell phone carriers?
Try moving (transferring) that current phone number to a different Gmail account (that do not have a phone number) then transfer back to the original Gmail account. When done, make outbound call. Does it still show "jnelsoninjax"...? Or, display a phone number this time?
Good luck!