Medical device systems, methods and devices are provided for treating a valve in a heart to minimize valve regurgitation. The medical device system includes an RF energy source, a handle, a treatment catheter, and a treatment device. The handle is operatively coupled to the RF energy source and coupled to the treatment catheter. The treatment device includes exposed electrode portions of one or more electrodes operatively coupled to the RF energy source and configured to contact tissue of a valve annulus. Further, one or more of the exposed electrode portions include a marker associated therewith. With this arrangement, a physician may view the one or more markers and selectively activate particular exposed electrode portions with RF energy to selectively treat a portion of the valve annulus.