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Hands Holding Plant

About Us

Bonnie L. Whyte, Ph.D.

Dr. Whyte received her undergraduate degree from Michigan State University and her Doctorate in Psychology from the University of Illinois at Urbana-Champaign. Internationally published in eating disorders, Dr. Whyte also specializes in a variety of medical psychology issues. She is active in treating young adults, adults, and senior adults. She is a consultant to the Cancer Care Center and Cystic Fibrosis clinics at Advocate Lutheran General Hospital. Dr. Whyte is a member of the American Psychological Association, Illinois Psychological Association, International Academy of Behavioral Medicine, Counseling and Psychotherapy and National Association of Sports Psychologists.


Melissa Ackerman, Psy.D. 

Dr. Ackerman received her Bachelor of Arts degree in Psychology at the University of Denver. She received her Doctorate degree in Clinical Psychology at the California School of Professional Psychology - Alameda campus. She is a generalist who works with people across the lifespan and specializes in children, adolescents and families. Dr. Ackerman also has extensive training and work experience in treating individuals who have a history of trauma (physical abuse, sexual abuse, emotional abuse and/or neglect as a child). Dr. Ackerman is a member of the American Psychological Association. 

Jacqueline Allen, Ph.D. 
Dr. Allen received her Ph.D. in Psychology from the University of Chicago. She is a Licensed Clinical Psychologist, and a member of the American and Illinois Psychological Associations. Dr. Allen has worked with culturally diverse clients in community mental health, inpatient, outpatient, student counseling, emergency room, substance abuse treatment, and private practice settings. She currently works with individuals and couples on emotional concerns such as depression and anxiety, coping skills, identity and personal development, life transitions, and relationship issues. Her approach is integrative, combining psychodynamic, family systems and cognitive behavioral techniques, as well as cultural perspectives, to understand each individual's unique worldview and life experience. 


Sayaka Machizawa, Psy.D.

Dr. Sayaka Machizawa received a Doctorate in Clinical Psychology from The Chicago School of Professional Psychology and a B.A. in Psychology from Cornell College in Iowa. As a Licensed Clinical Psychologist, she works at Georgemiller, Whyte, and Associates where she specializes in neuropsychological, forensic, and psychological fitness-for-duty evaluations. She works as an Associate Director of the Community Partnerships Department and Associate Faculty at the Chicago School of Professional Psychology. Dr. Machizawa serves as a Chairperson for both the International Committee for Women and the International Mentoring and Orientation Committee of the American Psychological Association. She has published several journal articles and book chapters on international and cross cultural issues in psychology.  Dr. Machizawa provides neuropsychological and psychological services in English or Japanese.

Kelly Ann Pariso, Psy.D., LPC

Dr. Pariso received her Doctor of Psychology degree from the Illinois School of Professional Psychology.  Dr. Pariso enjoys working with adolescents, adults and senior clients.  Her focus areas include depression, anxiety, bipolar disorder, stress reduction and personal growth.  Dr. Pariso’s training and professional experiences have allowed her to develop integrative and flexible therapy approaches tailored to individual client needs.  She has previously worked in a Joint Commission accredited trauma program, hospital settings and community mental health.  Dr. Pariso is a member of the American Psychological Association as well as the Illinois Psychological Association.


Kathleen Young, Psy.D.


Dr. Young received her Doctorate degree in clinical psychology at the American School of Professional Psychology – Schaumburg campus where she completed the Neuropsychology Concentration.  Her internship and fellowship training focused on the evaluation and treatment of conditions such as brain injury, dementia, mild cognitive impairment, attention deficit/hyperactivity disorder, post-traumatic stress disorder, depression, and anxiety.  As a Licensed Clinical Psychologist, she works at Georgemiller, Whyte, and Associates where she specializes in adult and geriatric neuropsychological assessment and fitness-for-duty evaluations.  Dr. Young’s areas of special interest include working with older adults and the functional applications of neuropsychological assessment.  She is an adjunct faculty member at the American School of Professional Psychology – Schaumburg campus where she serves as Director of the Neuropsychology Concentration.  Dr. Young is an active member of the Illinois Psychological Association and the American Psychological Association, Division 40, Clinical Neuropsychology.


Megan Rosecrans, Psy.D.

Megan Rosecrans received her doctoral degree from the Illinois School of Professional Psychology with a concentration in Health Psychology.  Dr. Rosecrans specializes in the treatment of chronic pain, depression, anxiety, mood disorders and eating disorders.  Dr. Rosecrans consults with bariatric surgical teams to provide psychological support for patients both pre and post surgery.   Additionally, Dr. Rosecrans offers biofeedback and hypnotherapy treatment options as part of a comprehensive treatment strategy.  Dr. Rosecrans has a therapeutic approach that is collaborative and solution focused.  A customized treatment strategy is designed for the specific needs of each patient.  Dr. Rosecrans is a participating member of the Midwestern Pain Society.


Angela Clarke, Ph.D.

Dr. Clarke is a neuropsychologist who earned her doctoral degree from Palo Alto University in California.  Dr. Clarkes specializes in providing neuropsychological and psychological assessments for adolescents, adults and seniors who may be suffering from a variety of conditions that affect cognitive or behavioral functioning.  Evaluation of conditions such as attention deficit disorder, memory loss, traumatic brain injury, dementia, Alzheimer’s disease, stroke related cognitive impairment, depression, anxiety and post-traumatic stress disorder are a few of the specialty areas of focus. Dr. Clarke works collaboratively with primary care as well as specialty physicians such as neurologists to assist in diagnosis and treatment planning for patients with cognitive or emotional concerns.  Dr. Clarke is a member of the American Psychological Association, California Psychological Association and Illinois Psychological Association. 

Katelyn Sehner, Practice Manager

Katelyn graduated with a Bachelor's Degree in Psychology from the University of Illinois – Chicago. She is a medical billing specialist and senior account manger for Georgemiller, Whyte and Associates. Katelyn has 8 years of experience in both billing and coding which makes her an invaluable part of the Georgemiller, Whyte and Associates management team. 


Donna Bock, Office Manager

Ms. Bock is the friendly voice greeting most callers to our practice. She coordinates clerical and administrative responsibilities for the practice. Currently she focuses on completing patient intakes and scheduling, verification of insurance benefits, and insurance payment disputes.






Dr. Lewis received his Bachelor of Science degree at the University of Southern Mississippi. He obtained his Doctor of Professional Counseling degree at Mississippi College. Dr. Lewis has worked in the healthcare field for 14 years. Dr. Lewis utilizes cognitive behavioral strategies as well as emotion focused therapy techniques to assist clients with making positive changes in their lives. Dr. Lewis specializes in mood disorders, depression, anxiety, addiction disorders, marital issues and weight management. Dr. Lewis feels joining with the client in working toward their personal goals is the cornerstone of his therapeutic style.





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