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The Medicare Rights Center runs a hotline (800-333-4114, Monday through Friday) that answers more than 20,000 calls a year and also manages a helpful, information-packed website at medicareinteractive.org.

In every state, federally funded programs offer individualized counseling to people who are preparing to enroll in Medicare. You can search for a local State Health Insurance Assistance Program (SHIP) at shiptacenter.org.

The government publishes extensive materials on Medicare at medicare.gov. Start with basic enrollment advice, and the annual Medicare & You handbook. For help selecting a Medicare Advantage plan, use the Medicare plan finder. You may need to call individual companies for more details.

For help selecting a Medicare Part D plan, call 800-MEDICARE (800-633-4227) or use the Part D 2017 plan finder. For help selecting a Medigap plan, consult the finder.

— Kaiser Health News