Clinical Site Services, Inc. (CSSi) is a global, full-service patient recruitment and retention company with a proven track record of accelerating clinical trial enrollment for pharmaceutical companies, CROs, and research sites. Leveraging innovative strategies, proprietary technologies, and extensive site relationships, CSSi offers a comprehensive suite of services including site feasibility, study start-up support, patient recruitment and enrollment, patient retention programs, and customized site-centric solutions. Their mission is to optimize the clinical trial process by connecting patients with research opportunities efficiently and effectively, ultimately helping to bring new therapies to market faster.
Serves as the central hub for global operations, strategic planning, business development, and the innovation of patient recruitment and site support methodologies.
Modern office space within a commercial business park, equipped with collaborative workspaces and technology infrastructure to support its specialized clinical trial services.
A client-focused and innovative work environment, emphasizing collaboration, expertise in patient recruitment, and commitment to accelerating clinical research. Employees likely experience a fast-paced setting driven by project deadlines and the evolving needs of clinical trials.
The headquarters is central to CSSi's strategic direction, operational oversight, and the development of its proprietary patient recruitment methodologies and technologies. It acts as the command center for its North American operations and global coordination.
Clinical Site Services, Inc. (CSSi) supports clinical trials globally, with a significant operational footprint in North America and Latin America. Their global service delivery model for patient recruitment, site feasibility, study startup, and patient retention is facilitated through their main offices and a network of in-country specialists. This allows them to manage multinational clinical studies by adapting strategies to local healthcare environments, regulatory requirements, and cultural contexts to ensure successful trial outcomes worldwide.
7550 Teague Road, Suite 100
Hanover
MD
USA
Address: Av. Cazón 1300, B1648 Tigre, Provincia de Buenos Aires, Argentina (Note: Specific address can vary; this is a general area for their LatAm operations, previously cited Alvear 1491, Martinez)
To expand CSSi's service delivery in South America, leveraging local expertise, language capabilities, and understanding of regional regulatory and cultural nuances to effectively manage clinical trial enrollment and site performance.
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As of April 2025, CSSi' leadership includes:
CSSi has been backed by several prominent investors over the years, including:
Clinical Site Services, Inc. has focused on strengthening its commercial leadership over the past year. A key development was the appointment of a new Chief Commercial Officer to spearhead growth and market strategy.
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Clinical Site Services, Inc. (CSSi) typically utilizes standard corporate email formats. The most common format combines the first initial and last name of the employee.
[first_initial][last]@cssienroll.com
Format
ctrizna@cssienroll.com
Example
85%
Success rate
CSSi LinkedIn Announcement • November 14, 2023
Clinical Site Services, Inc. (CSSi) announced the strategic appointment of Mark Booth as its new Chief Commercial Officer. Booth is tasked with leading the company's commercial strategy, sales, and marketing efforts to drive global growth and expand CSSi's innovative patient recruitment solutions....more
CSSi Blog • February 20, 2024
In a recent thought leadership article, CSSi delved into the evolving landscape of patient recruitment, highlighting how Decentralized Clinical Trials (DCTs) are reshaping strategies. The piece discusses new approaches and technologies CSSi employs to adapt to this shift, ensuring continued success in trial enrollment....more
Industry Event Participation (e.g., SCOPE Summit) • February 12, 2024
CSSi actively participated in the SCOPE Summit 2024, presenting its latest innovations in patient recruitment and site engagement. The company emphasized technology-driven solutions and tailored strategies to overcome enrollment challenges in complex clinical trials, reinforcing its commitment to advancing clinical research....more
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