Medigap in ZIP code 99138, Twin Lakes area

99138 is in Ferry County, where 15 insurers sell Medicare Supplement plans: 15 sell Plan G and 14 sell Plan N.

County: Ferry
Closest community: Twin Lakes
Medicare clinicians in 99138: 9
Nearest hospital: 29 mi

CMS lists 9 Medicare clinicians practicing at addresses in 99138, all listed as always accepting Medicare assignment. Practices here include Colville Nation Community Health Centers. Counting everything within 8 miles of the ZIP's center: 9 clinicians, 0.0% sometimes declining assignment (statewide 4.5%). Nearest general hospital: Ferry County Memorial Hospital in Republic, about 29 miles. Nearest Medicare-certified nursing home: Colville Tribal Convalescent C, about 28 miles (5 of 5 stars).

Medigap plans sold in 99138

Ferry County line-up. Full list: Twin Lakes. OIC chart, October 8, 2026.
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

Source: CMS Doctors and Clinicians file.
Specialty in 99138	Clinicians
Mental health	1
Foot care	1
Eye care	1
Physical therapy	1

Hospitals near 99138

Straight-line distance from the town center. Source: CMS Hospital General Information.
Hospital	Distance	Type	CMS overall rating
Ferry County Memorial Hospital Republic	29 mi	Critical access	not rated
Providence St. Joseph Hospital Chewelah	32 mi	Critical access	not rated
Coulee Medical Center Grand Coulee	38 mi	Critical access	not rated

Communities near 99138

Twin Lakes (3 mi)
Inchelium (11 mi)
Keller (18 mi)
Addy (27 mi)
Nespelem (27 mi)

Neighboring ZIP codes: 99137, 99131, 99140, 99167, 99129, 99101.

Common questions

Which insurers sell Medigap Plan G in 99138?

15 insurers sell Plan G to Ferry County residents (OIC chart current as of October 8, 2026).

How many Medigap insurers sell in 99138?

15, the Ferry County line-up.