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Medicare Supplement (Medigap) plans in Mason County, Washington
Every insurer selling Medigap in Mason County, with its premium for each plan. Covers Shelton.
- Insurers selling here
- 15 of 17
- Lowest open Plan G
- $239/mo
- Lowest open Plan N
- $189/mo
- County seat
- Shelton
- Region
- South Puget Sound
15 insurers sell Medicare Supplement insurance in Mason County, out of 17 approved in Washington. Residents of Shelton choose from the same list, at the same premiums anyone else in the state pays for that insurer's plan. The lowest Plan G premium open to any Mason County resident 65 or older is $239 a month from First Health Life & Health. The lowest Plan N is $189 from First Health Life & Health. High-deductible Plan G starts at $48 a month here, if you can cover the first $2,950 of costs in a bad year.
Mason County is one of the 22 counties where Regence BlueShield sells Medigap, including its low-premium Plan K at $121. Asuris Northwest Health does not sell here. Premera Blue Cross sells here, with Plan G at $286. Mason County is not on the list of counties with a reasonable choice of Medicare Advantage plans, so a resident declined by Medigap insurers for health reasons may qualify for the WSHIP Medicare Supplement plan. See if you're turned down for Medigap.
Medicare Supplement Plan G, monthly premium, Mason County
Insurers that sell in Mason County. Age 65+, bank draft. OIC chart current as of October 8, 2026.
Every plan and insurer in Mason County
| Insurer selling in Mason County | A | B | D | G | HD-G | K | L | N | C | F | HD-F |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Bankers Reserve Life | $234 | – | – | $257 | – | – | – | $194 | – | $336 | – |
| First Health Life & Health | $175 | $215 | – | $239 | – | – | – | $189 | – | $257 | – |
| GPM Health & Life | $375 | – | – | $466 | – | – | – | $239 | – | $514 | – |
| HumanaDental | $204 | – | – | $330 | $66 | – | – | $267 | – | $424 | $67 |
| Insurance Company of North America | $255 | – | – | $257 | $65 | – | – | $191 | – | $329 | – |
| Medco Containment Life | $259 | – | – | $311 | – | – | – | $226 | – | $377 | $93 |
| Premera | $240 | – | – | $286 | $71 | – | – | $215 | $328 | – | – |
| Regence BlueShield | $282 | – | – | $317 | – | $121 | – | $244 | $395 | $401 | – |
| State Farm | $252 | – | $309 | $310 | – | – | – | $239 | $409 | $413 | – |
| USAA | $155 | – | – | $309 | – | – | – | $194 | – | $343 | – |
| United American | $190 | $284 | $305 | $293 | $48 | – | – | $242 | $320 | $356 | $48 |
| United World Life (Mutual of Omaha) | $208 | – | – | $379 | $61 | – | – | $265 | – | $501 | – |
| UnitedHealthcare (AARP) | $225 | $332 | – | $324 | – | $103 | $228 | $265 | $390 | $392 | – |
| Washington National | $241 | – | – | $274 | $68 | – | – | $192 | – | $396 | – |
| WA Health Care Authority Premera Plan G | – | – | – | $233 | – | – | – | – | – | – | – |
Medicare Supplement Plan N, monthly premium, Mason County
Plan N trades office and ER copays for a lower premium.
Largest towns
| Town | Population (2024) |
|---|---|
| Shelton | 10,737 |
Hospitals in Mason County
| Hospital | – | Type | CMS overall rating |
|---|---|---|---|
| Mason General Hospital & Family of Clinics Shelton | under 1 mi | Critical access | 2 of 5 stars |
Doctors in Mason County
198 Medicare clinician listings at Mason County addresses; 8.6% are marked as sometimes declining Medicare assignment (statewide 4.5%). That's above the state level, which makes Plan G's excess-charge coverage more valuable here.
| Specialty | Clinicians in county |
|---|---|
| Cardiology | 4 |
| Cancer care | 0 |
| Orthopedics | 5 |
| Eye care | 6 |
| Kidney care | 0 |
| Neurology | 1 |
| Lung care | 0 |
| Digestive care | 0 |
| Urology | 0 |
| Dermatology | 0 |
| Diabetes and hormone care | 0 |
| Ear, nose and throat | 0 |
| Physical therapy | 7 |
| Mental health | 54 |
| Hearing | 0 |
All 6 cities and communities in Mason County · Plan pages: Plan G, Plan N, High-deductible Plan G, Plan A, Plan K, Plan F
Common questions
What is the cheapest Medigap Plan G in Mason County?
$239 a month from First Health Life & Health for anyone 65 or older, on the OIC chart current as of October 8, 2026. The state-sponsored HCA group plan lists $233.
Are Medigap premiums higher in Mason County than in Seattle?
No. Each insurer charges the same premium for a plan everywhere it sells in Washington. Counties differ only in which insurers sell there.
How many Medigap insurers sell in Mason County?
15. Not available here: Asuris and Regence BlueCross BlueShield of Oregon.
Where can I get free Medicare help in Mason County?
SHIBA, the state's free Medicare counseling program, takes calls at 1-800-562-6900 and can connect you to a local volunteer.