Oatmeal Healthoatmealhealth.com · public-data estimate, October 2026

Adventist Health

Lung screening gap across 20 counties in California, Hawaii and Oregon

550,000to990,000adults in its service area qualify for lung cancer screening and are not being screened

About 7,700 people here are diagnosed with lung cancer each year, and 66% are found at a late stage, when it is hardest to treat.

Explore the screening network
CAORNV
20 counties25 acute care hospitalsService areaShowing the California region; all regions are mapped below.
660,000 to 1.2Madults likely qualify under USPSTF 2021 criteria (estimate)
4,700lung cancer deaths a year in these counties, 2020 to 2024
16.3%of eligible adults screened in these states, vs 18.2% nationally

Estimates from public data only; no patient information. Sources and method below.

Where the eligible adults live

The counties where most of Adventist Health's Medicare inpatients live. Darker areas hold more adults who likely qualify, which is where outreach would start. Hover or tap any area for its estimate.

California

Oregon

Hawaii

Adults likely eligible, per county

0+2,800+5,100+8,300+35,400+54,300+60,500+

Acute care hospital in this system

Counties in the service area

CountyStateAdults likely eligibleLung cancer deaths per 100kMedicare screens billed locally, 2024
Los Angeles CountyCalifornia341,600 to 644,90019.75,864
Sacramento CountyCalifornia57,300 to 92,20024.91,363
Ventura CountyCalifornia29,200 to 60,50020.4399
Multnomah CountyOregon28,400 to 58,90027.01,119
Fresno CountyCalifornia35,900 to 58,80023.7166
Honolulu CountyHawaii32,100 to 54,30022.0431
Kern CountyCalifornia34,900 to 52,10024.9239
San Joaquin CountyCalifornia29,100 to 44,30024.652
Clackamas CountyOregon15,700 to 35,40024.326
Tulare CountyCalifornia17,400 to 27,00024.0162
Napa CountyCalifornia5,000 to 10,20020.167
Kings CountyCalifornia5,600 to 8,30028.389
Mendocino CountyCalifornia4,800 to 6,80027.2None billed locally
Sutter CountyCalifornia4,100 to 6,00028.3177
Lake CountyCalifornia4,000 to 5,10036.011
Tuolumne CountyCalifornia2,700 to 4,50027.1None billed locally
Yuba CountyCalifornia3,500 to 4,40035.4None billed locally
Tillamook CountyOregon1,600 to 2,80035.6None billed locally
Wasco CountyOregon1,400 to 2,30040.9None billed locally
Glenn CountyCalifornia1,200 to 1,90030.7None billed locally

6 of the 20 counties had no Medicare lung screening reads billed from a local address in 2024. County names link to their Missing Millions page.

What closing the gap would mean

If screening in these counties rose from 16.3% to the national rate of 18.2%, about 12,500 to 22,400 more people would be screened each year.

In the National Lung Screening Trial, low-dose CT screening lowered lung cancer deaths by 20% compared with chest X-ray. Today about 66% of lung cancers here are found at a late stage.

Illustrative estimate: eligible adults (range) times the change in screening rate. Not a forecast or a guarantee.

Each year in these counties

7,700new lung cancers
5,100found at a late stage
4,700lung cancer deaths

NCI and CDC State Cancer Profiles, annual averages.

Screening at Adventist Health today

Clinicians at Adventist Health locations billed 263 low-dose CT lung screening reads to Medicare fee-for-service in 2024. Including Medicare Advantage and other insurers, we estimate about 580 to 1,700 screenings a year.

Most adults who qualify see a primary care clinician every year. We count 1,482 primary care clinicians, 33 pulmonologists and 19 thoracic surgeons practicing at Adventist Health locations. A 20 pack-year smoking history is often missing from structured EHR fields, so many eligible patients are never flagged.

CMS Medicare Physician and Other Practitioners 2024 (CPT 71271); clinicians matched to Adventist Health by practice address using the AHRQ Compendium of U.S. Health Systems 2023, so reads billed by outside radiology groups are not included. The all-payer estimate scales Medicare fee-for-service by the local Medicare Advantage share (54%, CMS) and, at the high end, by the share of eligible adults under 65 (65%).

25 acute care hospitals

  • Adventist Health White MemorialLos Angeles, CA
  • Adventist Health GlendaleGlendale, CA
  • Adventist Health BakersfieldBakersfield, CA
  • Adventist Health HanfordHanford, CA
  • Adventist Health and RideoutMarysville, CA
  • Adventist Health Lodi MemorialLodi, CA
  • Dameron HospitalStockton, CA
  • Adventist Medical Center-PortlandPortland, OR
  • Adventist Health CastleKailua, HI
  • Adventist Health Simi ValleySimi Valley, CA
  • Adventist Health St. HelenaSaint Helena, CA
  • Delano Regional Med. Ctr.Delano, CA

And 13 more acute care hospitals.

Find them, reach them, give radiologists a second opinion

LungIQ Find

Reads clinical notes, diagnoses and medications in the EHR and returns a ranked list of patients likely eligible, including those whose pack-year history is missing. Start with a CSV export refreshed every 1, 3 or 6 months, or connect through FHIR or HL7.

LungNAV Reach

An AI patient navigator that texts and calls patients in 70+ languages, answers questions about the scan, and hands each patient to your scheduling team or nurse navigators with a call summary.

LungAI Second opinion

Gives radiologists a malignancy risk score for each nodule, factoring in change since the prior scan, inside the PACS and CADe software they already use. The radiologist makes the final call.

LungAI is an investigational medical device and has not been cleared by FDA. It is not commercially available in the United States.

How we estimate the gap

Modeled estimates from public data. They are not a count of Adventist Health patients and contain no patient information.

  • Service area: CMS Hospital Service Area File 2025 (counties within 120 miles of a system hospital holding 80% of its Medicare inpatients, plus any county with at least 1%); hospitals from the AHRQ Compendium of U.S. Health Systems, 2023.
  • Eligible adults, low estimate: Oatmeal Health Missing Millions (Census 2025 population, CDC PLACES smoking, USPSTF 2021).
  • Eligible adults, high estimate: University of Minnesota National Lung Cancer Screening Estimates (Haynes 2026), which also counts former smokers.
  • Screening rate: American Lung Association, State of Lung Cancer 2025.
  • Lung cancer cases and deaths: NCI and CDC State Cancer Profiles (incidence 2019 to 2023, deaths 2020 to 2024).
  • Screening volume: CMS Medicare Physician and Other Practitioners, 2024; CMS Medicare Advantage State/County Penetration, September 2026.

LungAI is an investigational medical device and has not been cleared by FDA. Oatmeal Health is preparing a 510(k) premarket notification. LungAI is not commercially available in the United States.

See Adventist Health's own numbers

In a 30 minute review we replace these public estimates with counts from your own records and agree on what a first program would look like.

Request a private screening review