WASHINGTON – North End Perio Practice For Sale. Annual collections pacing $1,600.000. 6 fully equipped operatories with state-of-the-art equipment. 2,277 SF office space. Building has great visibility and ample parking. Timeless interior design. Well-trained and experienced staff will continue and assist with the transition. Well-established practice that has been in the same location for over 25 years. Email us at email@example.com or call at 253-290-9329.