LOCATION

  PHD is conveniently located at 22153 Davis Drive, Suite #114, Sterling, VA 20164

From Route 7, take Route 28/Sully Road South.  Then get onto Route 625/Church Road West.  Make a right at the first light onto Davis Drive. Make a right into Sterling Oaks Commerce Center, go straight, and PHD is the third to the last Suite on the left.

From Route 267/Dulles Toll Road, take Route 28/Sully Road North.  Then get onto Route 625/Church Road West.  Make a right at the first light onto Davis Drive. Make a right into Sterling Oaks Commerce Center, go straight, and PHD is the third to the last Suite on the left.