Agree with Arrowwood Viburnum - Viburnum dentatum.
Another picture or two that clearly shows leaf arrangement along the stems will always make it easier to definitely ID. Take a big whiff of the flower scent, and report back on that too. Helps to sort through the many flavors of this excellent shrub genus.
There are allied hairsplitter species including V. recognitum, V. rafinesquianum, V. bracteatum, and a slew of V. dentatum varietas and subspecies - but you'll mostly find V. dentatum in landscapes.