There are 521 Periodontists in Washington, serving a population of 7,169,967 people in an area of 66,439 square miles. There is 1 Periodontist per 13,761 people, and 1 Periodontist per 127 square miles.
The state of Washington is ranked 13th in Periodontists per capita, and 19th in Periodontists per square mile.