Dahl-Chase Diagnostic Services Dahl-Chase Pathology Associates and Dahl-Chase Diagnostic Services are separate but related companies working together to provide outstanding anatomic and clinical pathology services.  The companies are based in Bangor, Maine, and serve physicians, hospitals, laboratories and clinics throughout Maine and across the United States.  As integrated organizations serving a large geographic area in rural Maine, we serve as a model of how to provide high quality pathology services at a reasonable cost, with emphasis on best practices and the appropriate use of new technologies.