You can choose a friend, family member or other person to be your authorized representative. As your authorized representative, this person can help you make decisions about your Medicare coverage, such as joining or leaving a plan, and filing appeals and grievances. If you would like to appoint an authorized representative, fill out an appointment of representative form and mail it to the address below.
However, an authorized representative cannot make decisions about your medical care. You may complete an advance directive form to tell your doctor what kind of care you want if you cannot make medical decisions.
Mail completed forms to:
Attn: Member Services
315 SW Fifth Ave.
Portland, OR, 97204
If you have questions about the authorized representative procedure, call 503-416-4279 in the Portland area or toll free at 1-888-712-3258 (TTY/TDD 1-800-735-2900 or 7-1-1).
Note: COA's Medicare contract with the federal government is renewed annually. Coverage beyond the end of the current year is not guaranteed. If the contract is not renewed or the service area reduced, COA must provide affected members with 90-day notice and a written description of members' rights and responsibilities, including alternatives for obtaining Medicare services.