A paddle lead assembly for providing electrical stimulation of patient tissue includes a paddle body having a proximal end, a distal end, and a longitudinal axis. A plurality of spaced-apart electrodes are disposed on the paddle body. The plurality of spaced-apart electrodes include a first electrode and a second electrode. At least one adjustable region is configured and arranged to adjust a center-to-center distance between the first electrode and the second electrode. At least one lead body is coupled to the paddle body. A plurality of terminals are disposed on the at least one lead body. A plurality of conductive wires couple each of the electrodes to at least one of the plurality of terminals.