Dr. David F. Tolin, Director

Dr. Tolin is the founder and Director of the Anxiety Disorders Center, Director of the Division of Neuropsychology, Director of Health Psychology, and Director for Cognitive Behavioral Therapy at the The Institute of Living. He is also Adjunct Associate Professor of Psychiatry at Yale University School of Medicine. Dr. Tolin received his Ph.D. from the University of Arkansas, and completed a predoctoral internship at Tufts University School of Medicine/VA Medical Center, Boston. Learn more about Dr. Tolin.


Jennifer L. Ferrand, Psy.D.

Dr. Ferrand completed her doctoral degree in clinical psychology at the University of Hartford. She completed a predoctoral clinical internship at the Institute of Living and a postdoctoral fellowship in Preventive Cardiology at Hartford Hospital. She has been employed by Hartford Hospital/The Institute of Living since 2005. Her clinical interests include weight management, behavior change, and pain management.

Mona Tiernan, Psy.D.

Dr. Tiernan received her doctorate in Clinical Psychology from The Virginia Consortium for Professional Psychology in 1996. She completed her pre-doctoral internship at Allegheny General Hospital in Pittsburgh Pennsylvania and completed a post-doctoral fellowship in Clinical Neuropsychology at Eastern Virginia Medical School in Norfolk, Virginia. Dr. Tiernan joined Hartford Hospital/The Institute of Living in March 2012. Her interests include solid organ transplant and pain management. 


Danielle Koby, Ph.D.

Dr. Koby joined the Division of Health Psychology in October 2011 and performs clinical work and research in the Department of Neurosurgery at Hartford Hospital. She earned a doctorate in Clinical Psychology from the University of Connecticut following a predoctoral internship at Rush University Medical Center in Chicago. She has completed a two-year postdoctoral fellowship in Medical Psychology at Mayo Clinic. Previously, she worked in the Division of Behavioral Medicine at the Miriam Hospital in Providence, RI and was appointed a Clinical Assistant Professor in the Department of Psychiatry and Human Behavior, Brown University Medical School. Her current clinical and research interests center on diagnosis and treatment of complex physical symptoms including seizures, spells and various movement disorders.

Jessica Sierra, Ph.D.

Dr. Sierra received her doctoral degree in clinical psychology from the University of Connecticut . She completed her predoctoral training at the Greater Hartford Clinical Psychology Internship Consortium (VA) and her postdoctoral fellowship at the Yale University School of Medicine. She has been employed by Hartford Hospital/The Institute of Living since 2009 and provides psychological assessment of adults, with a focus on bariatric surgery and transplant candidates.