Medicare in Hawaii: 2025 Guide
Hawaii's Medicare market is shaped by its unique geography, a strong tradition of employer-based health insurance under the state's Prepaid Health Care Act, and a healthcare landscape dominated by two major local insurers — HMSA and Kaiser Permanente. About 35% of Hawaii's Medicare beneficiaries are in Medicare Advantage plans, with the majority remaining on Original Medicare. Hawaii also has expanded Medicaid through Med-QUEST and a strong SHIP program called SAGE PLUS.
Medicare Advantage Plans in Hawaii
Hawaii's Medicare Advantage market is smaller than many similarly sized states, reflecting the dominance of two insurers and the state's island geography. On Oahu — home to Honolulu and the majority of the state's population — beneficiaries typically have 10–15 MA plan options. The neighbor islands have fewer choices.
Major Medicare Advantage insurers in Hawaii include:
- HMSA (Hawaii Medical Service Association): Hawaii's BCBS affiliate and the state's largest health insurer, HMSA offers Medicare Advantage plans with broad provider networks across Oahu and the neighbor islands. HMSA's deep relationships with Hawaii's hospitals and physician groups make it a familiar choice for beneficiaries transitioning from employer coverage.
- UnitedHealthcare: National MA plans available in Hawaii, particularly on Oahu, with both HMO and PPO options.
- Kaiser Permanente Hawaii: Kaiser offers integrated HMO plans on Oahu with its own medical centers, clinics, and pharmacy network. Kaiser is a strong choice for beneficiaries already using Kaiser's system before turning 65.
On Maui, Kauai, Hawaii Island (the Big Island), and Molokai, plan availability is more limited. Some neighbor island communities have only two to four MA options, and provider network access can be constrained. Many neighbor island residents rely on Original Medicare, which allows them to seek care at any Medicare-participating provider — including travel to Oahu for specialty services.
Hawaii has a unique context: its Prepaid Health Care Act requires most employers to provide health insurance to employees working 20+ hours per week. This means many Hawaii residents have strong employer health coverage before Medicare, and the transition to Medicare can involve careful coordination with retiree health benefits. SAGE PLUS counselors specialize in helping with this transition.
Medicare Savings Programs in Hawaii
Hawaii's Medicare Savings Programs are administered through Med-QUEST — Hawaii's Medicaid program — under the Department of Human Services (DHS). Hawaii has expanded Medicaid under the ACA, and Med-QUEST covers a broad range of low-income residents.
The three MSP levels available in Hawaii:
- Qualified Medicare Beneficiary (QMB): Pays Part A and Part B premiums, deductibles, and most cost-sharing. Individual income limit approximately $1,255/month (2025 federal baseline; Hawaii's high cost of living is a consideration in financial hardship assessments).
- Specified Low-Income Medicare Beneficiary (SLMB): Pays the Part B premium only. Slightly higher income limits than QMB.
- Qualifying Individual (QI): Pays the Part B premium; highest income limits, funded annually on a first-come, first-served basis.
To apply for an MSP in Hawaii, contact Med-QUEST through the Hawaii DHS at 1-800-316-8005 or visit mybenefits.hawaii.gov to apply online. Applications can also be submitted at your local DHS Benefits, Employment and Support Services (BESS) office on your island. MSP enrollment automatically qualifies you for Extra Help for Part D drug costs.
State Pharmaceutical Assistance in Hawaii
Hawaii does not operate a State Pharmaceutical Assistance Program (SPAP) that supplements Medicare Part D for beneficiaries above MSP income levels.
Hawaii Medicare beneficiaries seeking prescription cost help should consider:
- Extra Help / Low Income Subsidy: Federal assistance that significantly reduces Part D premiums and cost-sharing for beneficiaries with income up to 150% of the federal poverty level. Apply at ssa.gov or 1-800-772-1213.
- HMSA and Kaiser Part D Plans: Both HMSA and Kaiser offer Medicare Part D plans in Hawaii that may provide preferred pricing at their affiliated pharmacies, which are widely distributed across the islands.
- Pharmaceutical Manufacturer Programs: Many drug manufacturers offer patient assistance programs for Medicare beneficiaries who don't qualify for Extra Help. SAGE PLUS counselors can help identify these.
- Hawaii 211: The statewide referral service connects residents with local assistance programs including pharmaceutical and healthcare resources.
Getting Free Medicare Help in Hawaii
Hawaii's State Health Insurance Assistance Program is called SAGE PLUS — State Assistance for Getting Entry to Programs and Services for Seniors. SAGE PLUS is administered by the Hawaii Executive Office on Aging and provides free, unbiased Medicare counseling to all Hawaii residents with Medicare.
Contact SAGE PLUS (Hawaii SHIP):
- Phone: 1-888-875-9229
- Website: aging.hawaii.gov (search SAGE PLUS)
- Local SAGE PLUS counselors are available on Oahu through the City and County of Honolulu, and on the neighbor islands through the Maui County Office on Aging, the Hawaii County Office on Aging (Big Island), and the Kauai Agency on Elderly Affairs.
SAGE PLUS counselors can help you:
- Compare HMSA, Kaiser, and other Medicare Advantage and Part D plans available on your island
- Apply for Med-QUEST Medicare Savings Programs
- Coordinate Medicare with Hawaii employer retiree coverage and the Prepaid Health Care Act
- Navigate Medicare billing disputes and appeals
- Understand how Medicare works differently on neighbor islands with limited specialist access
Hawaii's Prepaid Health Care Act (PHCA) requires most employers to provide health insurance to employees working 20 or more hours per week. This means many Hawaii residents have employer-sponsored insurance continuously through their working years — sometimes making Medicare enrollment seem less urgent. However, it's important to understand that employer coverage through the PHCA does not always qualify as "creditable coverage" that delays Medicare enrollment penalties in the same way that large-employer group health plans do under federal rules. If your employer has fewer than 20 employees, Medicare pays primary and your employer plan pays secondary, which means you should enroll in Medicare Part B when first eligible or risk gaps in coverage. Contact SAGE PLUS at 1-888-875-9229 before making any Medicare enrollment decision involving an active employer plan.
Both HMSA and Kaiser are strong, established insurers with deep roots in Hawaii's healthcare system, so the best choice depends on your existing provider relationships and preferences. HMSA offers broader network flexibility — its PPO options allow access to a wide range of independent physicians and hospitals across Hawaii and some mainland coverage. Kaiser operates as an integrated HMO, meaning you receive care from Kaiser providers at Kaiser facilities; it's an excellent fit if you already use Kaiser and want seamless, coordinated care. Kaiser plans tend to be highly rated for quality. If you currently see non-Kaiser specialists you want to keep, HMSA may offer more continuity. SAGE PLUS at 1-888-875-9229 can walk you through a side-by-side comparison for your island and circumstances.
Neighbor island residents have fewer Medicare Advantage options than Oahu beneficiaries, and the available plans may have narrower networks due to the limited number of specialists and facilities on each island. On Maui, the Big Island, and Kauai, beneficiaries may find only two to four MA plans, and complex specialty care often requires travel to Oahu. For this reason, many neighbor island residents choose Original Medicare with a Medigap supplement, which covers care at any Medicare-participating provider anywhere in the US — including Oahu facilities for specialty services — without network restrictions. If you live on a neighbor island, SAGE PLUS at 1-888-875-9229 can help you evaluate whether available MA plans on your island provide adequate local access for your specific healthcare needs.