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We offer Medicare Advantage (HMO) health plans in different areas of Washington State.
Medicare Advantage HMO Service Area (PDF)

Enroll in a Medicare Advantage (HMO) health plan

Enroll by mail

Fill out a Kaiser Permanente Washington Medicare Advantage (HMO) election form to enroll in one of our health plans (effective through December 31, 2021). You can also use this form to add optional dental benefits to your current coverage.

There are limits on when and how often you can change your Medicare coverage. Please see the important enrollment information below.

2021 Kaiser Permanente Washington Medicare Advantage HMO Election Form (PDF)

Mailing address

Print out and mail your forms to:
Medicare Department
Kaiser Permanente
P.O. Box 232407
San Diego, CA 92193-9914

Or fax completed forms to:

Important enrollment information

There are limits on when and how often you can change your Medicare coverage:

The initial enrollment period is 3 months before, the month of, and 3 months after your 65th birthday (or otherwise first become eligible for Medicare).

From October 15 through December 7, 2020, anyone with Medicare will have an opportunity to switch from one Medicare plan to another. Coverage is effective January 1, 2021.

From January 1 through March 31, 2021, anyone on a Medicare Advantage plan may disenroll and move back to Original Medicare or enroll in another Medicare Advantage plan. You may choose to enroll in a stand-alone Part D prescription drug plan when you move back to Original Medicare during this period.

Switching from one Kaiser Permanente Medicare health plan to another counts as making a change. Generally, you can't make any other changes during the year except under special circumstances, such as if you move out of the plan's service area or are eligible for Medicaid coverage. Learn more about enrollment periods.

Learn about Medicare health plans for group, state, and federal employees

If you are becoming eligible for Medicare and your employer offers a group retiree Medicare Advantage health plan through Kaiser Permanente Washington, call us at 1-800-581-8252 or TTY 711 from 8 a.m. to 5 p.m., Monday through Friday.

FEHB and PEBB members can also find information online:

Key Medicare enrollment dates

Medicare Annual Enrollment Period (AEP)
October 15 through December 7

Medicare Initial Coverage Election Period (ICEP)
65th birthday month + 3 months before and after

Medicare Advantage Open Enrollment Period (MA OEP)
January 1 through March 31

Questions? Call us

Prospective members
8 a.m. to 8 p.m., 7 days a week
TTY 711

Current members
8 a.m. to 8 p.m., 7 days a week
TTY 711

Medicare Star Quality Ratings

Our Medicare Advantage health plan was rated 4.5 out of 5 Stars in Washington for 2021. The Medicare Star Rating is based on quality, service, and member satisfaction. Our high rating means you can have peace of mind knowing that you're getting high-quality care and coverage — all in a single plan at a great value.1

NCQA Quality Rating

Kaiser Permanente Washington Medicare Advantage (HMO) plan was rated 4.5 out of 5 in the National Committee for Quality Assurance (NCQA) Medicare Health Insurance Plan Ratings 2019-2020.2