#1Oncology Hematology Associates
Based in Greenville, PA
Clinical Research Sites in Mercer County, PA
The top-ranked clinical research sites serving Mercer County, PA are Oncology Hematology Associates, UPMC Cancer Center at UPMC Horizon and UPMC Hillman Cancer Center in Greenville/UPMC Horizon. We list 24 clinical research sites serving Mercer County, PA. 24 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 Mercer County, PA. 24 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 Mercer County
#2UPMC Cancer Center at UPMC Horizon
Based in Farrell, PA#3UPMC Hillman Cancer Center in Greenville/UPMC Horizon
Based in Greenville, PA#4VivaTech International, Inc.
Based in PA#5UPMC Hillman Cancer Center - New Castle
Serves this area from PA#6UPMC Jameson
Serves this area from PA#7Meadville Medical Center
Serves this area from Meadville, PA (23 mi)#8Yolanda G Barco Oncology Institute
Serves this area from Meadville, PA (23 mi)#9Youngstown State University
Serves this area from Youngstown, OH (25 mi)#10Saint Elizabeth Youngstown Hospital
Serves this area from Youngstown, OH (25 mi)
14 more providers serving this area
- Tod Children's Hospital - Forum Health, Youngstown, OH (25 mi)
- Saint Joseph Warren Hospital, Howland Center, OH (26 mi)
- Care Access - Youngstown, OH
- Optima Research, OH
- Optima Research Boardman, OH
- Saint Elizabeth Boardman Hospital, OH
- UPMC Cancer Center at UPMC Northwest, PA
- Butler Memorial Hospital, PA
- Tesla BioHealing Medical Center in Butler-PA, PA
- UPMC Hillman Cancer Center at Butler Health System, PA
- The Center for Applied Health Sciences, OH
- Scott & Christie and Associates, PC, PA
- UPMC Children's Community Pediatrics - Bass Wolfson, Cranberry, PA
- UPMC Hillman Cancer Center - Passavant - Cranberry, PA
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Frequently asked questions
How many clinical research sites serve Mercer County?
We list 24 clinical research sites serving Mercer County, PA: 4 based there and 20 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 Mercer County?
The top-ranked clinical research sites serving Mercer County, PA are Oncology Hematology Associates, UPMC Cancer Center at UPMC Horizon, UPMC Hillman Cancer Center in Greenville/UPMC Horizon, VivaTech International, Inc. and UPMC Hillman Cancer Center - New Castle. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Mercer County are verified against official records?
10 of the top 10 match an active official record: Oncology Hematology Associates (ClinicalTrials.gov), UPMC Cancer Center at UPMC Horizon (ClinicalTrials.gov), UPMC Hillman Cancer Center in Greenville/UPMC Horizon (ClinicalTrials.gov), VivaTech International, Inc. (ClinicalTrials.gov) and UPMC Hillman Cancer Center - New Castle (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
Hermitage, Sharon, Grove City, Greenville, Farrell, Sharpsville, Reynolds Heights, Mercer, Lake Latonka, Stoneboro, West Middlesex, Sandy Lake, Jamestown, Clark, Fredonia, New Lebanon, Jackson Center, Sheakleyville