The Westat CLS Difference

Westat combines industry leading expertise and knowledge for cost-effective, efficient, optimally designed clinical trials that deliver robust data to help seamlessly navigate the regulatory process.

Consistency You Can Count On

When it comes to choosing a CRO, you have a lot at stake: significant R&D investments, reputation, multiple stakeholder expectations – and always, the patients who stand to benefit from the treatments you’re developing. Our team pivots to address shifting priorities during the clinical research process. We pride ourselves on creative problem solving, especially for trials that pose unique challenges. We understand common challenges of trial implementation and develop solutions that efficiently bring treatments and therapeutics to market. Our team has experience designing and implementing clinical trials for oncology, infectious diseases, vaccines, rare and emerging diseases, and more.

Not a Typical CRO

Building on more than 50 years of respected research, Westat serves as a CRO for forward-thinking biopharma companies investigating promising new drugs and therapeutics to address some of the world’s most pressing health challenges. We become an extension of their team, designing and implementing innovative, rigorous, credible clinical trials that deliver high value and cost efficiency. Our services are comprehensive – from protocol concept, site selection, patient recruitment, and study execution to post-trial reporting, data analysis, and regulatory approvals. Biopharma companies can count on Westat CLS to partner with them every step of the way – addressing challenges with creativity, integrity, and a honed, expert focus on results.

Leading Clinical Trials Experts

When you work with Westat, you get integrity, trust, and our best team – every time. You’ll have a direct line to experts at the top of their field who are invested in partnering with you to drive rigorous studies and outcomes to help advance innovative treatments to subsequent higher phases of clinical trials.

View Nancy Dianis profile

Nancy Dianis

Vice President

View Deepak Khatry profile

Deepak Khatry

Associate Director and Biostatistics Lead

View Kathleen Robergeau-Hunt profile

Kathleen Robergeau-Hunt

Project Director

View Whitney Smith profile

Whitney Smith

Associate Director and Data Services and Development Lead

View Julia Solarczyk Donnelly profile

Julia Solarczyk Donnelly

Regulatory Affairs Lead

Why Choose Westat for Your Clinical Trials?


While our forward-thinking researchers see the world through a data lens, we also focus on the humans behind the numbers. Our CLS teams deliver cutting-edge expertise to design patient-centered, robust clinical studies.


Westat understands the budget and schedule pressures involved with bringing new treatments to market – and our comprehensive, efficient processes reflect our commitment to delivering value rapidly while ensuring quality.


Our resourceful experts pivot easily to creatively solve problems and address challenges that may arise in the course of clinical trials and respond nimbly to changes in business direction when needed.


With Westat, you can count on direct, reliable communication with experts at the top of their field, forming a trusted partnership to help you seamlessly navigate the regulatory process.