Medicare Carriers Medicare Advantage Plans: Blue Cross of Idaho Humana Pacific Source Regence Blue Shield of Idaho Medicare Supplements: Continental Life - Aetna Mutual of Omaha PDP Carriers: Humana SilverScript Health Carriers Other Carriers: Blue Cross of Idaho Mountain Health Co-op Regence Blue Shield of Idaho Aflac Exchange Carriers: (through YourHealthIdaho.org) Blue Cross of Idaho Mountain Health Co-op Pacific Source