Located on-site at the Blue Cross and Blue Shield of Texas headquarters in Richardson, the Credit Union originally served only the local employees and their immediate families. Today the field of membership includes active and retired employees of Blue Cross and Blue Shield of Texas and Blue Cross and Blue Shield of Oklahoma, active and retired Texas and Oklahoma-based employees of Health Care Service Corporation and its current and former wholly-owned subsidiaries, and their family members. Currently these subsidiaries include Availity, LLC, Dearborn National and TMG Health, Inc.