Providers Overview Provider Service Representatives Directory Provider service representatives directory Medical and dental professionals: We're here to assist you. Members: To get in touch with PacificSource, visit our Contact Us page. OregonWillamette Valley & SouthwestMarion, Polk, & surrounding CountiesPortland Metro (Clackamas, Multnomah, Washington) Central & Eastern Oregon, Columbia Gorge IdahoNorthernCentralEasternSouthern MontanaWesternCentralEastern, Billings Clinic, & Wyoming WashingtonEasternWestern