About REX FAMILY PRACTICE OF KNIGHTDALE (UNC PHYSICIANS NETWORK, LLC) Rex Family Practice Of Knightdale (unc Physicians Network, Llc) is a primary care provider established in Knightdale, North Carolina specializing in family medicine. The NPI number of Rex Family Practice Of Knightdale (unc Physicians Network, Llc) is 1164710810 and was assigned on July 2011..