Understanding Medicare

Get the Medicare Information You Need

There's a lot to learn before making a decision about Medicare coverage. These articles, videos, and other resources will help you understand your options before you start shopping for a health plan.

Answers to Top Medicare Questions

Milo Knows Medicare: What Does Medicare Cover?

You can also visit www.ssa.gov or call Social Security at 1-800-772-1213 to get more information about your eligibility and plan options.

Enroll in a Group Health Medicare plan now

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Key Dates

Medicare Open Enrollment Period
Oct. 15 through Dec. 7

Medicare Initial Election Period
65th birthday month + three months before and after

Questions? Call Us:

Prospective members
8 a.m. - 8 p.m., Monday - Friday
1-800-446-8882
TTY WA Relay 1-800-833-6388 or 711

Extended hours Oct. 1 - Feb. 14
8 a.m. - 8 p.m., 7 days a week

Current members
CUSTOMER SERVICE
8 a.m. - 8 p.m., Monday - Friday
1-888-901-4600
TTY WA Relay 1-800-833-6388 or 711

Extended hours Oct. 1 - Feb. 14
8 a.m. - 8 p.m., 7 days a week

Other Resources

Glossary

NCQA Excellent Accreditation

Group Health Cooperative Medicare (HMO) was rated 4.5 out of 5 in the National Committee for Quality Assurance (NCQA) Medicare Health Insurance Plan rankings 2015-2016.