About Us

Meet Our Staff


Staff Bio

Nathan R. Jaisingh, N.P.

Nathan R. Jaisingh, N.P.

President & CEO

Nathan R. Jaisingh, is a board certified psychiatric nurse practitioner who has studied at Morehead State University, in Morehead, KY, Rush University in Chicago, IL, and the University of Kentucky in Lexington, KY. His graduate and doctoral areas of focus include adolescent, adult, and geriatric psychiatry, psychopharmacology, and clinical practice & research with competitive athletes in improving overall performance through mental strength coaching.

Nathan R. Jaisingh founded Benchmark Psychiatric Services, LTD. in 2002, with the primary endeavor centered on geriatric psychiatry and psychopharmacology - with the goal of delivering stellar services on-site to long term care facilities. This model has grown from a single provider in two facilities, to now 15 providers in nearly 65 facilities in Illinois and Kentucky - and still growing!

After two and a half years of research and development, Nathan R. Jaisingh identified a significant need for a comprehensive program specifically structured for professional, collegiate, and competitive pre-collegiate athletes. From this, IAE Sport Psych, LLC was created.

Nathan R. Jaisingh is a Frank G. Dickey Fellow of the University of Kentucky and is an avid University of Kentucky athletics supporter. He is also a fervent Chicago Bears and Chicago White Sox fan, having now lived in the Chicagoland area since 2000.

Nathan R. Jaisingh is married to a wonderful wife, Nicole, and together raise 3 delightful & inspiring children.

Tim Cullnan

Tim Cullnan

Director of Business Development

Tim Cullnan, Director of Business Development

Tim Cullnan has over 30 years’ experience is all areas of Marketing and Advertising. After a career with major agencies, he launched his own consulting company, DAS, Inc. Through it, Tim now specializes in Business Development for both existing and start-up companies. As a former high school basketball coach, Tim has a close, personal understanding of the need for the services that IAE Sport Psych provides.

Tim earned his B.A. from Loyola and his M.A. from De Paul Universities. He lives in Palos Heights, IL with his wife, Peggy. Together they have raised four children and are the proud Grandparents of 3 boys.

Michelle Mannino-Purkey, M.S., L.M.F.T.

Michelle Mannino-Purkey, M.S., L.M.F.T.

Licensed Marriage & Family Therapist

Michelle Mannino Purkey received her undergraduate degree in Psychology from Purdue University and her master’s degree in Marriage and Family Therapy from Purdue University Calumet. Her clinical experience includes working with individuals, couples, families, and groups.

Michelle’s areas of interest include medical family therapy and bereavement. Specifically, Michelle completed her master’s thesis on the effects of cancer on the family. She compiled information about cancer support centers throughout the United States and the types of services they offer to people affected by cancer.

Michelle works from solution-focused approach and believes that people are the experts on their lives. She views her role as someone who can offer support and empathy as well as someone who can challenge and encourage people to find new solutions. Michelle believes that discussing and highlighting a person’s strengths and prior successes is a critical part of therapy.

Thomas Potoski, L.C.P.C

Thomas Potoski, L.C.P.C

Certified School Psychologist

Tom has over twenty years of experience in the field of Clinical Counseling and School Psychology. He provides testing, psycho-educational evaluations and consultation to develop in student athletes the learning and
study skills necessary for academic success.