Healthcare Navigator is based in Papillion, NE. Agency NPN: 21649060. We service the bordering states, OK, TX, OK, TN, IL and The Carolinas. If you have questions about your Medicare drug plan and are unsure who to call, or you might be a victim of fraud, contact Social Security: Omaha - 1-866-716-8299; Lincoln - 1-866-593-2880; Council Bluffs - 1- 866-331-9094; Office locator: https://www.ssa.gov/locator