Medicare help · Windward Oahu
Kailua and Lanikai have Adventist Health Castle in town, the county’s full plan menu, and a retiree population that splits between longtime Windward families and Marine Corps Base Hawaii veterans.
No cost, no obligation, no pressure.
No cost, no pressure. Prefer to call? (702) 706-6564.
Medicare in Kailua
Kailua has Honolulu County’s full Medicare menu and its own hospital, Adventist Health Castle, a 160-bed medical center that contracts through HMSA Akamai Advantage and the national carriers and that any Medigap policy covers. Kaiser members use Kaiser’s Windward clinics and Moanalua Medical Center over the Pali. For specialty care beyond Castle, Queen’s and Straub are twenty minutes away, network permitting.
Waimanalo and the Marine base add a military-retiree layer. We compare what is sold at your ZIP code, confirm Castle and your Honolulu specialists are covered, and set Advantage beside a supplement.
Major care in the area includes:
Plan networks differ — we check that your doctors and hospital are covered before you enroll.
Kailua, Lanikai, Enchanted Lake, Keolu Hills, Maunawili, Waimanalo, Olomana.
Turning 65? Your Initial Enrollment Period is the 7 months around your birthday. Already on Medicare? The Annual Election Period is Oct 15–Dec 7, and Medicare Advantage Open Enrollment runs Jan 1–Mar 31. Moving to another island or losing a plan opens a Special Enrollment Period.
Your options
All-in-one Part C plans, often $0 premium, that use a local network — in Hawaii that usually means choosing between Kaiser, HMSA and a few national carriers, island by island.
How Advantage worksMedigap pairs with Original Medicare and lets you see any provider that accepts Medicare — Queen’s, Straub, Hilo Benioff, or a specialist on the mainland.
How Medigap worksStandalone drug coverage chosen around your medications and pharmacy. 2026 out-of-pocket cap: $2,100.
How Part D worksAdvantage plans built for a chronic condition, for nursing-facility care, or for people with both Medicare and Med-QUEST.
About SNPsQuestions from Kailua
Honolulu County typically offers Medicare Advantage plans from Kaiser Permanente, HMSA and national carriers, every Medigap company licensed in Hawaii, and the full Part D lineup, set by county and changing each plan year.
Only if Queen’s is in that plan’s network, which varies by plan and year. With Original Medicare and a Medigap policy any Honolulu provider that accepts Medicare is covered. We confirm before you enroll.
Nothing. Independent agents are paid by the carriers when you enroll, so comparing plans and reviewing your coverage each year is free to you.
Nearby
Ready when you are
A short, friendly conversation — no pressure, no cost.
Written and reviewed by Darin Weidauer — licensed insurance agent (NPN 18580338, HI License #18580338), Gerontologist (USC Leonard Davis School of Gerontology), MBA, Registered Social Security Analyst, and 22-year U.S. Air Force veteran.Last reviewed September 13, 2026. Plan availability, benefits and costs change every plan year — verify current details at Medicare.gov, 1-800-MEDICARE, or Hawaii SHIP at 1-888-875-9229.