#1Centralia Oncology Clinic
Serves this area from Centralia, IL (17 mi)
Clinical Research Sites in Clinton County, IL
The top-ranked clinical research sites serving Clinton County, IL are Centralia Oncology Clinic, Saint Mary's Hospital and Cancer Care Center of O'Fallon. We list 19 clinical research sites serving Clinton County, IL. 19 of the providers shown match an active record from ClinicalTrials.gov, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Clinical Research Sites serving Clinton County, IL. 19 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked clinical research sites for Clinton County
#2Saint Mary's Hospital
Serves this area from Centralia, IL (17 mi)#3Cancer Care Center of O'Fallon
Serves this area from O'Fallon, IL (27 mi)#4Cancer Care Specialists of Central Illinois
Serves this area from O'Fallon, IL (27 mi)#5Cancer Care Specialists of Illinois
Serves this area from O'Fallon, IL (27 mi)#6Cancer Care Specialists of Illinois - Cancer Care Center of O'Fallon
Serves this area from O'Fallon, IL (27 mi)#7Gateway Clinical Trials
Serves this area from O'Fallon, IL (27 mi)#8Hospital Sisters Health System (HSHS) - St Elizabeth's Hospital
Serves this area from O'Fallon, IL (27 mi)#9HSHS Saint Elizabeth's Hospital
Serves this area from O'Fallon, IL (27 mi)#10HSHS St. Elizabeth's Hospital
Serves this area from O'Fallon, IL (27 mi)
9 more providers serving this area
- Memorial Hospital, O'Fallon, IL (27 mi)
- Memorial Hospital East, O'Fallon, IL (27 mi)
- Siteman Cancer Center - Shiloh, O'Fallon, IL (27 mi)
- Cancer Care Specialists of Illinois-Swansea, Swansea, IL (32 mi)
- Memorial Hospital Belleville, Swansea, IL (32 mi)
- Southwest Illinois Health Services LLP, Swansea, IL (32 mi)
- Alton Memorial Hospital, IL
- OSF Saint Anthony's Health Center, IL
- Saint Anthony's Health, IL
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Frequently asked questions
How many clinical research sites serve Clinton County?
We list 19 clinical research sites serving Clinton County, IL: 0 based there and 19 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which clinical research sites serve Clinton County?
The top-ranked clinical research sites serving Clinton County, IL are Centralia Oncology Clinic, Saint Mary's Hospital, Cancer Care Center of O'Fallon, Cancer Care Specialists of Central Illinois and Cancer Care Specialists of Illinois. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Clinton County are verified against official records?
10 of the top 10 match an active official record: Centralia Oncology Clinic (ClinicalTrials.gov), Saint Mary's Hospital (ClinicalTrials.gov), Cancer Care Center of O'Fallon (ClinicalTrials.gov), Cancer Care Specialists of Central Illinois (ClinicalTrials.gov) and Cancer Care Specialists of Illinois (ClinicalTrials.gov), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
How do sponsors judge a research site?
Common checks are enrollment history in the indication, experienced coordinators, IRB arrangements, start-up time and data quality. ClinicalTrials.gov shows which studies a site has been listed on.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .
Communities served
Breese, New Baden, Carlyle, Trenton, Aviston, Germantown, Albers, Beckemeyer, Bartelso, Damiansville, St. Rose, Hoffman, Huey