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Medigap in ZIP code 99113, Colton 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.

99113 is in Whitman County, where 15 insurers sell Medicare Supplement plans: 15 sell Plan G and 14 sell Plan N.

ZIP 99113, Whitman County

County: Whitman
Closest community: Colton
Medicare clinicians in 99113: 0
Nearest hospital: 10 mi

No Medicare clinician lists a practice address inside 99113. Nearest general hospital: Pullman Regional Hospital in Pullman, about 10 miles. Nearest Medicare-certified nursing home: Three Creeks Post Acute, about 13 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 99113

Whitman County line-up. Full list: Colton. 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

Hospitals near 99113

Straight-line distance from the town center. Source: CMS Hospital General Information.
Hospital	Distance	Type	CMS overall rating
Pullman Regional Hospital Pullman	10 mi	Critical access	2 of 5 stars
Tri-State Memorial Hospital Clarkston	15 mi	Critical access	4 of 5 stars
Garfield County Public Hospital District #1 Pomeroy	21 mi	Critical access	not rated

Communities near 99113

Colton (3 mi)
Uniontown (6 mi)
Pullman (10 mi)
Clarkston (14 mi)
West Clarkston-Highland (14 mi)

Neighboring ZIP codes: 99179, 99163, 99102, 99403, 99347, 99161.

Common questions

Which insurers sell Medigap Plan G in 99113?

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

How many Medigap insurers sell in 99113?

15, the Whitman County line-up.