Contact Us We'd love to hear from you! Potomac River Clinic 4880 MacArthur Blvd NW Washington, DC 20007 (we are co-located with The River School) Tel: (202) 333-1403 Fax: (202) 333-1404 Hours: M-F 8am - 5pm Fill out this form to contact us Contact us Name(Required) First Last Email(Required) Enter Email Confirm Email Message(Required)