Hours Of Operations Comcast Service Center Washington D.C. Comcast Service Center Hours of Operation and Locations in Washington D.C. 4.5 - 19 votes 1 Locations in Washington D.C. www.customer.xfinity.com Comcast Service Center Hours Category: Electronics Comcast Service Center - Washington, DC 20017 900 Michigan Ave Ne(888) 266-2278 View Store Details Recommend For You Xfinity Store Concerto Networks Microtek Computer Labs Pritchard Industries Incorporated Bt Americas Global Development Network Mind Shift Technologies Geeks On-site Nerds To The Rescue Unisys Corporation