Denver-based healthcare technology provider TriZetto has signed on a big, Pacific Northwest healthcare plan, Premera Blue Cross, as a customer, the firm said today. TriZetto said that Premera Blue Cross, which serves 1.5 million members in the Pacific Northwest, is using its integrated services and technology solutions to implement case management. Financial impact of the win was not disclosed. TriZetto's technology and services are used by healthcare organizations to improve their efficiency and care delivery, as well as for revenue cycle management.