Medicare help · Windward Oahu
Kaneohe sits between the Koolau cliffs and the bay, with Adventist Health Castle ten minutes away, Queen’s and Kaiser over the Pali, and Marine Corps Base Hawaii at the end of the road.
No cost, no obligation, no pressure.
No cost, no pressure. Prefer to call? (702) 706-6564.
Medicare in Kaneohe
Kaneohe has Honolulu County’s full Medicare menu: Kaiser Permanente, HMSA and national-carrier Advantage plans, every Medigap company licensed in Hawaii and the full Part D lineup. Adventist Health Castle in Kailua is the Windward side’s hospital and contracts through HMSA and the national plans; Kaiser members cross to Moanalua. Whether a plan includes Castle and the Honolulu specialists you would be referred to is the first thing we check.
Marine Corps Base Hawaii shapes the rest of the town. Retired Marines and sailors with TRICARE For Life usually need neither a Medigap policy nor a Part D plan; the question is whether an MA-only Advantage plan’s extras are worth it. See our Marine Corps Base Hawaii page.
Major care in the area includes:
Plan networks differ — we check that your doctors and hospital are covered before you enroll.
Kaneohe, Kahaluu, Heeia, Ahuimanu, Waiahole, Kaaawa, Punaluu, Hauula.
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 Kaneohe
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.
Castle contracts with some Advantage plans and not others, changing year to year. With Original Medicare and a Medigap policy there is no network. 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.