Missing Millions · 2026 estimate

Washington is missing 214,900 lung cancer screenings.

About 1 in 12 adults ages 50 to 80 in Washington qualifies for lung cancer screening and hasn't been screened. Find your county below.

255,200adults qualify for screening under USPSTF 2021 criteria (estimate)
15.8%were screened, 37th of 51 (American Lung Association, 2025); 18.2% nationally
8,204low-dose CT screening scans billed to Medicare fee-for-service by Washington providers in 2024

Sources: U.S. Census Bureau Population Estimates 2025; CDC PLACES 2025; USPSTF 2021; American Lung Association, State of Lung Cancer 2025; CMS Medicare Physician and Other Practitioners 2024 (CPT 71271). Modeled estimates; see methodology below.

The gap, county by county

Shade shows how many adults ages 50 to 80 are missing screening. Select a county.

King County

40,200

missing lung cancer screenings (estimate)

  • Qualify for screening47,700
  • Adults 50 to 80 missing screening1 in 17
  • Medicare low-dose CT scans, 20241,484
Open the King County page

Every Washington county, ranked

Ranked by estimated missing screenings. Select a column to sort.
1King County40,20047,7001 in 171,484
2Pierce County27,50032,7001 in 101,133
3Snohomish County22,50026,7001 in 121,403
4Spokane County17,50020,8001 in 101,924
5Clark County16,00019,0001 in 11420
6Thurston County8,60010,3001 in 12287
7Kitsap County8,50010,1001 in 12371
8Yakima County7,8009,3001 in 965
9Whatcom County6,9008,3001 in 11103
10Benton County5,7006,7001 in 1214
11Skagit County4,7005,6001 in 1172
12Cowlitz County4,5005,3001 in 934
13Grays Harbor County3,9004,6001 in 898
14Lewis County3,8004,5001 in 80
15Clallam County3,5004,2001 in 100
16Grant County3,1003,7001 in 10176
17Mason County3,1003,6001 in 90
18Island County2,8003,4001 in 130
19Chelan County2,7003,2001 in 11426
20Stevens County2,4002,9001 in 90
21Franklin County2,4002,9001 in 100
22Okanogan County2,2002,6001 in 80
23Walla Walla County1,9002,3001 in 11194
24Douglas County1,5001,7001 in 100
25Jefferson County1,4001,7001 in 130
26Kittitas County1,4001,7001 in 110
27Pacific County1,3001,5001 in 90
28Klickitat County1,0001,2001 in 100
29Asotin County9701,2001 in 90
30Whitman County8701,0001 in 120
31Pend Oreille County7308701 in 90
32San Juan County6808101 in 140
33Adams County5806901 in 90
34Skamania County5406401 in 100
35Lincoln County4805701 in 100
36Ferry County4505301 in 80
37Wahkiakum County2603101 in 90
38Columbia County1802101 in 100
39Garfield County901101 in 110

Methodology

How we estimate the gap

A modeled estimate from public data only. It is not a count of patients and contains no patient information.

missing = adults 50 to 80 × county smoking rate × national eligibility factor × (1 − state screening rate)

  • Adults 50 to 80: U.S. Census Bureau, Population Estimates, Vintage 2025
  • Smoking: CDC PLACES 2025 release (Kentucky and Pennsylvania: 2024 release)
  • Eligibility: USPSTF 2021 criteria, scaled to about 14.5 million eligible adults nationally
  • Screening rates: American Lung Association, State of Lung Cancer 2025
  • Who is missing: Census population estimates (age) and American Community Survey 2020 to 2024 (language)
  • Screening activity: CMS Medicare fee-for-service claims for low-dose CT (CPT 71271), 2024, by provider location

Estimates under 50 are shown as "fewer than 50"; others are rounded. Full methodology

Many of them are already your patients.

Oatmeal Health helps health systems and community health centers find, navigate, and screen the people who qualify, alongside the care teams you already have.

Find my missing patients Explore your screening network