I don't think that is any species of Dogwood (Cornus sp.).
Note that the suspect has toothed margins to the leaves. Note that the database images show dogwood leaves with entire margins, and that is typical for all dogwoods. Note the veining pattern of the suspect leaves; that doesn't match the way that dogwood veins head toward the margin but don't quite terminate there.
5601Lisa could grace this post with additional images of this vigorously growing shrub - starting with pictures of the WHOLE plant. Since plant parts aren't lacking, prune off a chunk and then photo detailed images of the finer parts where it is easy to focus on them.
It may be my own bias, but there is something suspiciously viburnum-esque about that plant...