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CSS was founded in 2005 and has become a major global, full-service patient recruitment company. A leader in the industry, CSS delivers strategic patient recruitment, enrollment and retention solutions to study sponsors and CROs. With over 15 years of clinical trial experience in over 40 countries, CSSi has strategically planned and executed recruitment campaigns in more than 30 therapeutic areas. Our in-house team provides expertise on all aspects of recruitment and retention: creative development, traditional and digital media advertising, patient retention support programs, national and local outreach, medical professional networking, and information technology solutions.

Website https://cssenroll.com/
Revenue $7 million
Employees 267 (39 on RocketReach)
Founded 2005
Address 1099 Winterson Rd Ste 136, Linthicum, Maryland 21090, US
Phone (866) 277-4888
Technologies
Industry Research Services, Business Services General, Patient recruitment & patient enrollment, Business Services, Site Selection, Clinical Trials, Site Services, Global Enrollment Planning, Patient Retention, Regulatory Consulting, Feasibility Studies, Creative Design, Advertisement Production, Web Development, Media Planning & Placement
Web Rank 17 Million
Keywords Patient Recruitment, Clinical Research, Clinical Trials, Enrollment Solutions, Patient Retention, Healthcare Recruitment, Global Recruitment, Pharmaceutical Recruitment, Biotech Recruitment, Medical Recruitment, Research Recruitment, Clinical Trial Recruitment, Healthcare Research, Drug Development, Medical Research, Patient Engagement, Full Service Recruitment
Competitors WCG ThreeWire, Beaufort CRO, Clinical Trial Media, Medici Inc, ICTS (view competitors)
SIC SIC Code 283 Companies, SIC Code 28 Companies, SIC Code 80 Companies
NAICS NAICS Code 32 Companies, NAICS Code 325 Companies, NAICS Code 3254 Companies

CSSi Questions

The CSSi annual revenue was $7 million in 2026.

Chris Trizna is the President of CSSi.

39 people are employed at CSSi.

CSSi is based in Linthicum, Maryland.

The NAICS codes for CSSi are [32, 325, 3254].

The SIC codes for CSSi are [283, 28, 80].

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