773.282.9845
3401 N. Central Avenue Chicago, IL 60634

INVESTIGATORS

INVESTIGATORS

Brett Plyler, M.D. 
Investigator – CRC since 2006
Board Certified General Psychiatry

Dr. Plyler is a board certified psychiatrist with over 15 years of experience as a practicing physician. He has been a Principal Investigator at Chicago Research Center since 2006 and has participated on over 80 clinical trials focusing on mood disorders, sleep, fibromyalgia, and diabetes. In addition to his role as an investigator, he serves as an attending psychiatrist at Northwestern Memorial Hospital and maintains his own psychiatry practice in downtown Chicago.

Monika Jaffe, D.O. 
Investigator – CRC since 2013
Board Certified General Pediatrics

Dr. Jaffe is board certified in general pediatrics and joined Chicago Research Center in 2013. She devotes her time to clinical research and maintains experience as a Principal and Sub-Investigator on over 40 clinical trials with both pediatrics and adults. She has research experience in a variety of indications including depression, fibromyalgia, insomnia and diabetes.

Jane Dyonzak, Ph.D. 
Investigator – CRC since 2006
Board Certified by American Board of Sleep Medicine

Dr. Dyonzak is a licensed clinical psychologist and board certified by the American Board of Sleep Medicine. She joined Chicago Research Center in 2006 as a Principal Investigator focusing on sleep disorders, and has participated in over 30 clinical trials. She has conducted both privately and publically funded research studies in addition to having numerous publications on sleep disorders. In addition to her duties at CRC, Dr. Dyonzak is partnered with Insomnia Treatment Specialists LLC., is on the staff at Sleep Disorders Center at Holy Family Medical Center, and is a consultant at Evanston Hospital’s Sleep Center.

Seanra Kalil, PA-C
Investigator – CRC since 2016
Certified by the National Commission on Certification of Physician Assistants

Ms. Kalil is certified by the National Commission on Certification of Physician Assistants (NCCPA) and is currently licensed in the state of Illinois. She joined Chicago Research Center in 2016 and has served as an investigator on numerous clinical trials focusing on mood disorders, sleep and fibromyalgia. In addition to her work on clinical trials, she serves as adjunct faculty at Northwestern University’s PA program.