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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.

AndoverAndover, Massachusetts
A 70-acre site that combines state-of-the-art R&D facilities with flexible, multi-product manufacturing capabilities
boulderBoulder, Colorado
An expert in small molecule drug discovery with a focus on developing innovative cancer therapeutics
CambridgeCambridge, Massachusetts
Global headquarters for our Center for Therapeutic Innovation (CTI), which has established locations in New York City, San Diego, and San Francisco
GrotonGroton, Connecticut
Where nearly every one of our products are, in part, developed
lajollaLa Jolla, California
Powerfully reinforcing the company's presence in the global biotechnology industry
Pearl RiverPearl River, New York
The primary location for our company’s global Vaccine Research and Development work
Sandwich, UKSandwich, UK
Home of the Pharmaceutical Sciences and Global Regulatory Affairs groups
St. Louis, MOSt. Louis, MO
A 300,000 sq. ft. facility producing innovative emergency care products that serve unique needs during severe medical crises

Learn more about the process of joining a clinical trial and find a trial near you.

Go to Pfizer Clinical Trials Site
Programs & Initiatives Avengers Assemble! Teaming Up with Marvel to Illustrate the Importance of COVID-19 Vaccination “Avengers: Everyday Heroes" is an original comic from Pfizer and Marvel. It's about the importance of keeping up with COVID-19 vaccinations, including boosters. Real People 'I Choose to Be Positive': A Metastatic Melanoma Story Guided by Hope When she discovered a suspicious mole, she sought a second opinion. That and asking "What's next?" through two metastatic melanoma diagnoses may have saved her life. Real People The Story of Kendall Square Orchestra, a Symphony of Scientists Since 2018, scientists and technology professionals in Cambridge, MA's Kendall Square have come together as musicians in Kendall Square Orchestra (K2O).