Hours Of Operations Comcast Service Center Washington D.C. Washington Comcast Service Center Hours of Operation and Locations in Washington, DC 4.5 - 19 votes 1 Locations in Washington 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 Explore WashingtonView More Apparel CostcoMarshallsTJ MaxxRoss Dress for LessBig Lots Sports CostcoTargetNew BalanceLA FitnessNike Jewelry CostcoMarshallsLord & TaylorSaks Fifth AvenueChico's Recommend For You Xfinity Store R & R Solutions Studio Xfinity Dm Computers Clear Internet Harmony Computer Solutions Ribbons Express Incorporated Fdm Group Incorporated Ventures Unlimited Incorporated Concerto Networks