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Medigap in ZIP code 99128, Farmington area
By Vadim Marusin, licensed Medicare insurance agent in Washington (WAOIC #1365574). Insurer data checked against the state chart current as of October 8, 2026.
99128 is in Whitman County, where 15 insurers sell Medicare Supplement plans: 15 sell Plan G and 14 sell Plan N.
- County
- Whitman
- Closest community
- Farmington
- Medicare clinicians in 99128
- 0
- Nearest hospital
- 24 mi
No Medicare clinician lists a practice address inside 99128. Nearest general hospital: Whitman Hospital and Medical Center in Colfax, about 24 miles. Nearest Medicare-certified nursing home: Colfax Health and Rehabilitation of Cascadia, about 21 miles (1 of 5 stars).
7,083 people on Medicare in Whitman County71% in Original Medicare (WA 50%)12% of those 65+ are 85 or older
Medigap plans sold in 99128
| Plan | Insurers | Who |
|---|---|---|
| Plan G | 15 | Asuris, Bankers Reserve Life, First Health Life & Health, GPM Health & Life, HumanaDental, Insurance Company of North America and more |
| Plan N | 14 | Asuris, Bankers Reserve Life, First Health Life & Health, GPM Health & Life, HumanaDental, Insurance Company of North America and more |
| High-deductible Plan G | 6 | HumanaDental, Insurance Company of North America, Premera, United American, United World Life (Mutual of Omaha), Washington National |
| Plan A | 14 | Asuris, Bankers Reserve Life, First Health Life & Health, GPM Health & Life, HumanaDental, Insurance Company of North America and more |
| Plan K | 2 | Asuris, UnitedHealthcare (AARP) |
| Plan F | 13 | Asuris, Bankers Reserve Life, First Health Life & Health, GPM Health & Life, HumanaDental, Insurance Company of North America and more |
Hospitals near 99128
| Hospital | Distance | Type | CMS overall rating |
|---|---|---|---|
| Whitman Hospital and Medical Center Colfax | 24 mi | Critical access | 5 of 5 stars |
| Pullman Regional Hospital Pullman | 26 mi | Critical access | 2 of 5 stars |
| MultiCare Valley Hospital Spokane Valley | 41 mi | Acute care | 5 of 5 stars |
Communities near 99128
- Farmington (2 mi)
- Garfield (7 mi)
- Oakesdale (8 mi)
- Tekoa (9 mi)
- Palouse (13 mi)
Neighboring ZIP codes: 99158, 99130, 99033, 99161, 99018, 99174.
Common questions
Which insurers sell Medigap Plan G in 99128?
15 insurers sell Plan G to Whitman County residents (OIC chart current as of October 8, 2026).
How many Medigap insurers sell in 99128?
15, the Whitman County line-up.
Sources
- Washington OIC / SHIBA, 2026 Approved Medicare Supplement (Medigap) plans (rates current as of October 8, 2026)
- Washington OIC, Medigap (Medicare Supplement) plan coverage and costs
- CMS Doctors and Clinicians National Downloadable File (data.cms.gov dataset mj5m-pzi6), released Nov. 12, 2026
- CMS Hospital General Information (data.cms.gov dataset xubh-q36u)
- CMS Nursing Home Provider Information, October 2026 (data.cms.gov dataset 4pq5-n9py)
- U.S. Census Bureau 2024 Gazetteer files; 2024 population estimates (SUB-EST2024)
- U.S. Census Bureau 2024 ZCTA Gazetteer; 2020 ZCTA-to-county relationship file