Main Research and Development Centers
Each of our R&D centers specializes in a different area of scientific exploration. We have several major campuses located throughout the U.S. and U.K.
Andover, Massachusetts
A 70-acre site that combines state-of-the-art R&D facilities with flexible, multi-product manufacturing capabilities.
Cambridge, Massachusetts
Located in Kendall Square, our Cambridge site interlaces Pfizer’s R&D capability with the densest biomedical community in the world.
Groton, Connecticut
As the company’s largest R&D facility, Groton is involved in the development of nearly every Pfizer medicine and vaccine.
La Jolla, California
With more than 500,000 square feet of state-of-the-art facilities, this is where our scientists discover and develop cutting-edge cancer therapies using advanced laboratories and equipment.
Pearl River, New York
The primary location for our company’s global Vaccine Research and Development work.
Sandwich, UK
Home of the Pharmaceutical Sciences and Global Regulatory Affairs groups.
St. Louis, MO
A 300,000 sq. ft. facility producing innovative emergency care products that serve unique needs during severe medical crises.

Clinical Trials
Learn more about the process of joining a clinical trial and find a trial near you.
Go to Pfizer Clinical Trials Site DetailsRelated Articles
A Prostate Cancer Survivor Shares the Importance of Early Detection—and Why Knowing Your History, Monitoring PSA and Talking to Your Doctor Matters
For years, senior oncology account specialist Dan Morgan has helped doctors understand what Pfizer medications can do for cancer patients. In 2024, the script flipped when he became a patient himself. Thanks to his work, Dan knew just how to advocate for his health by requesting blood tests and diagnostic exams, and his prostate cancer was detected early, before he even felt sick.
Living Longer with Cancer: Redefining What It Means to Survive
The sixth season of Science Will Win, Pfizer's award-winning podcast, focused on cancer. The six episodes explored the disease from every angle, from its rising incidence in younger populations to the precision medicine tools helping clinicians catch it earlier and treat it more effectively.
Pfizer's 2025 Impact Report Highlights Progress Across Patients, Planet, and Responsible Business
Here at Pfizer, we are in the business of breakthroughs, and while our focus is on making advancements that impact patients’ lives, we are also aware of our work’s broader impact on the world. Every year, we take stock of the impact our work has on the world, the environment, and people themselves in our Impact Report.










