An implantable stimulator, having at least one electrode contact array comprising multiple electrode contacts disposed on an external surface of said stimulator. The electrode contacts are configured to have a first polarity. At least one additional electrode contact is disposed on the external surface, the at least one additional electrode contact is configured to have a second polarity. One or more of the electrode contacts disposed on the stimulator are configured to deliver at least one or more of a monopolar stimulation and a multipolar stimulation.