Our Team

Our team is highly skilled in performing clinical research and providing medical care to our study participants.  Our team of physicians, study coordinators, and patient communication personnel ensure the effective management of study protocols, patient screening, and quality data collection. All members of the team have obtained appropriate certifications and accreditations (IATA and CCRP). They are trained in and guided by Good Clinical Practices (GCP) and International Committee on Harmonization (ICH) guidelines in their work.

Medical Team


varanoSusann Varano, M.D., Medical Director & Principal Investigator

As Principal Investigator, Dr. Varano has led over 75 clinical trials, and has participated in more than 20 others in a Sub-Investigator role, working with 25 different Pharmaceutical companies, and is GCP/ICH certified. Double-board certified, Dr. Varano specializes in Internal Medicine and has a sub-specialty in Geriatric Medicine. Dr. Varano has developed community programs serving older patients and their caregivers as Program Director and Geriatrician of the Elder Horizons Program at Yale New Haven Hospital. She has obtained certification as Diplomat of the American Board of Internal Medicine. Dr. Varano holds an M.D. from the Chicago Medical School, and a B.S. from Saint Joseph’s College.

Dr. Varano leads our regional team of investigators, setting the standard for performance across our locations, working with other PIs to evaluate participation in new studies, and training new investigators as they begin their own work in clinical research.

Jerry Ferrentino, M.D., Sub-Investigator

Dr. Ferrentino is an OB/Gyn, awarded his M.D. by the NY Medical College, and completed his residency with the National Naval Medical Center.  Dr. Ferrentino works with CRC as a Sub-Investigator on a range of women’s health studies, complementing his work in private practice in our community.

Jeffrey Carruth, M.D., Sub-Investigator

Dr. Carruth acts as Sub-Investigator on select clinical trials, particularly those that are in the areas related to his speciality in pain management.  Dr. Carruth is an anesthesiologist and has studied at Yale University (Research Fellow, Vascular Surgery), NY Medical College, Texas Tech University Health Center (Chief Resident, Anesthesia), and Mount Sinai School of Medicine (Chief Fellow).  He is the co-author of a Textbook of Regional Anesthesia section on Radiographic Imaging in Regional Anesthesia.

Lauren 1

Lauren Calgreen, APRN, Sub-Investigator

Lauren joined CRC in 2012, and works with our team  as a sub-investigator on many of our high-volume studies. She earned her Bachelor’s degree from Mount St. Mary College, and her MSN from Quinnipiac University.


RachelPRachel Pierce, Assistant Site Director

Rachel leads our clinical trial coordination as Assistant Site Director.  She has more than 19 years of experience working with sponsors and CROs to evaluate and execute highly successful studies across a range of indications.  Rachel is a Certified Clinical Research Professional, maintaining good standing with the Society of Clinical Research Associates since 2005, and IATA Certified since 2001.

Working primarily out of our Milford location, Rachel sets the standard for Coordinators in terms of  recruitment, training, and performance across the CRC organization as a whole.

Joan Boyer, LPN, Research Nurse

Joan has been working with our team since 2017 as a Research Nurse, bringing with her a 30-year history of work as a Research Nurse and Study Coordinator for safety and efficacy trials in the areas of rheumatology, cardiology, endocrinology, neurology, urology, infectious disease and musculoskeletal diseases.

Holly Moss, Study Coordinator Assistant

Holly joined our clinical research team as a Phlebotomist and Lab Technician in 2018 and is working as a Study Coordinator Assistant.  Holly also participates in our volunteer recruitment efforts, and is trained as a medical assistant and an EMT.

Adina Hodges, LPN, Research Nurse

Adina joined CRC in 2019 as a Research Nurse, primarily responsible for work on vaccine studies.  Adina has extensive experience as a nursing professional, working with patients in home, institutional, and clinic settings.


Our medical team is supported by our patient recruiting team who connect volunteers with the studies they qualify for and by our management team who provide an efficient infrastructure to support the conduct of each study.



Patient Recruiting Team


Management Team