This information is issued by Highmark Blue Shield on behalf of its affiliated Blue companies, which are independent licensees of the Blue Cross Blue Shield Association. Highmark Inc. d/b/a Highmark Blue Shield and certain of its affiliated Blue companies serve Blue Shield members in the 21 counties of central Pennsylvania. As a partner in joint operating agreements, Highmark Blue Shield also provides services in conjunction with a separate health plan in southeastern Pennsylvania. Highmark Inc. or certain of its affiliated Blue companies also serve Blue Cross Blue Shield members in 29 counties in western Pennsylvania, 13 counties in northeastern Pennsylvania, the state of West Virginia plus Washington County, Ohio, and the state of Delaware. All references to Highmark in this document are references to Highmark Inc. d/b/a Highmark Blue Shield and/or to one or more of its affiliated Blue companies.