Medicare Resources

Official links, enrollment guides, and local contacts for Hawaii Medicare beneficiaries

Official Medicare Resources

Medicare.gov: Official federal Medicare website. Plan finder, enrollment, eligibility checker
Social Security Administration: Medicare enrollment, Part B premiums, IRMAA
Centers for Medicare & Medicaid Services (CMS): Policy, regulations, official guidance

Hawaii-Specific Resources

EUTF: Employer-Union Health Benefits Trust Fund. Retiree plan options, premiums, enrollment
Hawaii SHIP: State Health Insurance Assistance Program. Free Medicare counseling for Hawaii residents
DHRD Retiree Benefits: State Department of Human Resources Development retiree info

Health Plan Portals

HMSA EUTF Retiree Portal: Benefits, claims, provider search for HMSA plan members
Kaiser Permanente: Member portal for Kaiser plan members
Humana EUTF: Portal for Humana Medicare Advantage plan members

Important Phone Numbers

Resource	Phone
Medicare (federal)	1-800-MEDICARE (1-800-633-4227)
Social Security	1-800-772-1213
EUTF	(808) 586-7390 / 1-800-295-0089
Hawaii SHIP	(808) 586-7299 / 1-888-875-9229
HMSA	(808) 948-6499 / 1-800-776-4672
Kaiser Hawaii	(808) 432-5955 / 1-800-966-5955

Key Dates

Period	Dates	What You Can Do
Annual Enrollment (AEP)	Oct 15 - Dec 7	Change Medicare Advantage or Part D plans
Open Enrollment (OEP)	Jan 1 - Mar 31	Switch from Medicare Advantage to Original Medicare
EUTF Open Enrollment	May 1 - May 29, 2026	Change EUTF plan selections for the upcoming plan year
General Enrollment	Jan 1 - Mar 31	Enroll in Part B if you missed your IEP (penalty applies)

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