Contact Member Services Members and prospective members are encouraged to contact the Society's Membership Department. Heart Rhythm Society P.O. Box 712 Annapolis Junction, MD 20701 USA +1-202-464-9855 +1-240-241-5476 (FAX)membership@HRSonline.org Not a member? Please contact info@HRSonline.org at 202-464-3400. Also, consider joining the Society today to receive all the benefits of membership.