About Us

Our Beginning

The Dartmouth CO-OP Primary Care Practice-based Research Network (Dartmouth CO-OP PBRN) was founded in 1972 by enthusiastic primary care clinicians working towards improving the quality of healthcare.

We are considered the oldest primary care research network in the United States. As such we have an extensive voluntary cooperative network composed of primary care clinicians, other healthcare professionals, and patient and family representatives. Our members represent various clinics and communities within Vermont, New Hampshire, and Maine.

We serve as an operational base for primary care clinicians, their practices, and their communities, to work together to answer community-based healthcare questions and translate research findings into practice. You can find us housed within the Department of Community & Family Medicine at Dartmouth Geisel School of Medicine.

What we do

Here at the Dartmouth CO-OP PBRN we value our clinicians and our community. It is our mission to bring clinicians together, help them formulate and carry out their research, and then report it back to the scientific community. What's more is that we don't stop there. We then help our clinicians not only connect with their local communities but get them and their communities involved in the work they are doing. We've realized that science alone isn't the answer. Thus we try to make our communities, the true stakeholders, a part of the continued research and quality improvement projects that our clinicians perform.

Meet the Team

Ardis Olson

Ardis Olson, MD

Research Director

Ardis has steep history in Pediatrics and Community and Family Medicine. She graduated from the University of Minnesota in '69 and obtained her MD in '72. Since then she has been a professor of Pediatrics and a Professor of Community and Family Medicine. She is currently working at the Dartmouth Hitchcock Memorial Hospital as well as lending guidance to our community clinicians to strengthen their research and data analysis.


Debbie Johnson

Executive Director

Debbie has worked with the Dartmouth CO-OP PBRN for over 30 years. Graduated from the University of Vermont in '79 and the University of Colorado in '92, Debbie brings her experience as a researcher and coordinator to help direct and guide our community clinicians. You will often see her on the front lines of data collection, connecting with our community practices or out walking with her favorite pup, Abby.

Troi Perkins

Troi Perkins

Community Research Coordinator

Graduated in 2016 from NC State University in Zoology and Fish & Wildife, Troi brings her extensive experiences as a research coordinator working in public science to the Dartmouth CO-OP PBRN. She enjoys working directly with the public and communicating science to the community. She will often be found along side Debbie in the field, playing IT in the office, or kayaking around Vermont and New Hampshire in her spare time.