Missing Millions · 2026 estimate

Montana is missing 46,700 lung cancer screenings.

About 1 in 9 adults ages 50 to 80 in Montana qualifies for lung cancer screening and hasn't been screened. Find your county below.

54,300adults qualify for screening under USPSTF 2021 criteria (estimate)
13.9%were screened, 43rd of 51 (American Lung Association, 2025); 18.2% nationally
1,151low-dose CT screening scans billed to Medicare fee-for-service by Montana 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.

Yellowstone County

6,700

missing lung cancer screenings (estimate)

  • Qualify for screening7,700
  • Adults 50 to 80 missing screening1 in 8
  • Medicare low-dose CT scans, 2024115
Open the Yellowstone County page

Every Montana county, ranked

Ranked by estimated missing screenings. Select a column to sort.
1Yellowstone County6,7007,7001 in 8115
2Flathead County4,6005,3001 in 969
3Missoula County3,8004,4001 in 10170
4Cascade County3,4004,0001 in 8166
5Gallatin County2,8003,3001 in 12378
6Lewis and Clark County2,8003,3001 in 10253
7Ravalli County2,3002,6001 in 90
8Lake County1,8002,0001 in 80
9Silver Bow County1,6001,8001 in 80
10Lincoln County1,5001,7001 in 70
11Sanders County9701,1001 in 70
12Glacier County8601,0001 in 40
13Park County8509801 in 90
14Big Horn County7608801 in 50
15Hill County7508701 in 60
16Deer Lodge County6407401 in 70
17Jefferson County6207101 in 90
18Carbon County5906801 in 90
19Fergus County5906801 in 80
20Roosevelt County5406201 in 50
21Custer County5306101 in 80
22Rosebud County4705501 in 60
23Madison County4605301 in 100
24Stillwater County4405201 in 90
25Richland County4405101 in 90
26Beaverhead County4305001 in 90
27Powell County4104801 in 70
28Broadwater County3904501 in 80
29Blaine County3804401 in 60
30Pondera County3604201 in 60
31Dawson County3604201 in 90
32Valley County3403901 in 80
33Musselshell County3203701 in 80
34Chouteau County3203701 in 70
35Mineral County3003501 in 80
36Teton County2903401 in 80
37Toole County2703201 in 60
38Phillips County2102401 in 80
39Granite County2002401 in 80
40Sweet Grass County1802101 in 90
41Sheridan County1702001 in 80
42Wheatland County1201401 in 70
43Fallon County1201401 in 80
44Judith Basin County1201401 in 80
45Meagher County1101201 in 90
46Liberty County1001201 in 70
47Powder River County901001 in 90
48Prairie County80901 in 70
49McCone County80901 in 90
50Daniels County70801 in 90
51Carter County70801 in 80
52Garfield County60601 in 80
53Golden Valley County50601 in 70
54Wibaux Countyfewer than 50501 in 80
55Treasure Countyfewer than 50fewer than 501 in 90
56Petroleum Countyfewer than 50fewer than 501 in 80

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