Diagnosis, Evaluation, and Therapy for Attention, Memory, Emotional, and Learning Difficulties
Diagnosis, Evaluation, and Therapy for Attention, Memory, Emotional, and Learning Difficulties

Our Doctors and Therapists

Our highly-trained providers have extentive clinical experience and are dedicated to the interest and wellness of our patients and their families.

Dr. Christina Blodgett Dycus, Ph.D.

Founder and Clinical Director


Dr. Christina Blodgett Dycus is the Founder and Clinical Director of Thomson Memory Center which was done in honor of her grandmother's struggles with Alzheimer's disease. She earned her Doctorate from the Illinois Institute of Technology and completed her fellowship in clinical neuropsychology at Loyola University Medical Center. Diagnostically, she excels thru the correlation of neuropsychological data and neuroimaging results.

Dr. Blodgett Dycus was born and raised in the northwest suburbs, where she now resides with her own family.

Dr. Amina Homeidan, Psy.D.


Dr. Amina Homeidan received her Doctorate from Carlos Albizu University with a focus in clinical neuropsychology. She completed her clinical internship at the Battle Creek VA Medical Center in Michigan where she provided services to individuals with an array of cognitive, medical, and psychiatric disorders. Her clinical interests include neurological disorders throughtout lifespan and cross-cultural neuropsychology. Dr. Homeidan was raised in Miami, FL and is proficient in both English and Spanish. During her free time she enjoys volunteering, being outdoors, traveling, and attending concerts or festivals.

Dr. Anthony Tucci, Ph.D.


Dr. Anthony Tucci joined the Thomson Memory Center in 2014 after completing his internship at Jewish Child and Family Services which focused on neuropsychological assessment and multi-theoretical intervention across the lifespan. He earned his Doctorate from Northern Illinois University where he gained specialized training in neuropsychological assessment, developmental psychopathology, and evidence-based interventions. Dr. Tucci completed his 4,000 hour post-doctoral fellowship with TMC, attaining specific training in comprehensive neuropsychological evaluation.  Following his post-doctoral fellowship he continued at TMC, advancing to a Clinical Neuropsychologist and supervisor. Dr. Tucci also teaches college level courses in the community.

He enjoys working with families, children, and adults to improve management of severe pathology as well aiding in adjustment to significant lifestyle changes. Dr. Tucci grew up in Chicago’s western suburbs and enjoys spending time with his children, traveling, and hiking.

Dr. Arina Polevoy, Psy.D.


Dr. Arina Polevoy completed her internship specializing in clinical neuropsychology at the Illinois Psychological Association Predoctoral Internship Consortium (IPAPIC) and received her Doctorate from the Illinois School of Professional Psychology with a concentration in neuropsychology. She then completed a two-year fellowship program at TMC as well as Northwest Behavioral Health Services while focusing on providing integrative neuropsychological assessments to children and adults. Dr. Polevoy utilizes a variety of methods including a thorough review of presenting concerns, medical records and informant interviews, intellectual assessment, and socio-emotional evaluations. She also evaluates eligibility for school and/or test accommodations. Her vast clinical interests include assessments of children, adolescents, and adults with a variety of clinical presentations including: TBIs, learning and developmental disorders, ADHD, epilepsy, HIV-related disorders, socio-emotional evaluations, and complex medical conditions, such as stroke, cancer, and memory disturbances like Alzheimer's disease. Dr. Polevoy's hobbies include traveling and spending time with family and friends.

Dr. Calsey Fasching, Psy.D.


Dr. Calsey Fasching joined our team in September of 2016 for her fellowship after completing her Doctorate at Saint Mary’s University of Minnesota and her internship at the Department of State Hospitals in California. After completion of her 2-year post-doctoral training she remains part of the clinical team. Dr. Fasching's clinical skill include neuropsychological evaluation across the lifespan and is particularly gifted in assessing patients with chronic conditions. Outside of the office Dr. Fasching enjoys running and spending time with her two french bulldogs, Olaf and Alfie.

Dr. Christina Vocos, Psy.D.


Dr. Christina Vocos joined the Thomson Memory Center for her fellowship in August 2012. Following completion of her 2-year post-doctoral training she remains a part of the clinical team and continues to provide extensive neuropsychological testing. Dr. Vocos has experience assessing and treating all ages with a particular interest in the geriatric population. She specializes in cognitive capacity assessments and frequently conducts in-home evaluations.

Dr. Vocos grew up in Chicago’s northwest suburbs and enjoys spending time with her friends and family as well as participating in recreational sports.


Deborah Foshager, MA, LCPC


Assisting our geriatric population through cognitive strengthening, stimulation, and remediation, Deborah Foshager specializes in treating dementia, dementia-related disorders, anxiety, depression, and grief/loss within her individualized therapy. She is well versed with family consultation regarding the cognitive decline of a loved one by answering questions, providing expectations, and offering advice on how to best handle the newfound situation.

Deborah earned her Bachelor’s in Elementary Education from Bob Jones University and her Master’s in Clinical Psychology from Wheaton College. Her experience stretches from preparing couples to marry as a Certified Prepare/Enrich Counselor to working as a Teaching Assistant with psychology graduate students, providing mentoring in interpersonal skill development and specific therapeutic techniques. She is happy to work with adults, couples, and seniors.

Dr. Holly Hagen, Psy.D.


Dr. Holly Hagen received her Doctorate in Psychology from the Adler School of Professional Psychology with a concentration in neuropsychology. She completed her internship at Mount Sinai Medical Center in New York specializing in TBIs, stroke, and anoxic injury. Dr. Hagen has extensive experience in assessing patients of all ages with a particular focus in pediatrics.

During her free time, Dr. Hagen enjoys running, cooking, and spending time with her family.

Dr. Jason Karafa, Psy.D.


Dr. Jason Karafa specializes in neuropsychological evaluations for children and adults with acquired brain disorders and neurodevelopmental and congenital disorders, including Autism Spectrum Disorders, TBIs, learning disorders, and ADHD. He completed his Doctorate in clinical psychology, with a specialization in neuropsychology, through the Illinois School of Professional Psychology. Dr. Karafa started at Thomson Memory Center as a neuropsychology technician and soon returned after completing his internship at BRAINS in Grand Rapids, MI. He is dedicated to providing the highest level of patient care and satisfaction. An avid outdoor enthusiast, Dr. Karafa enjoys running, traveling, and spending time on the lake.

Dr. Kelly Fields, Ph.D.


Dr. Kelly Fields joined Thomson Memory Center after finishing her internship with the Missouri Health Sciences Psychology Consortium focusing on toddlers, teenagers, college students, and veterans' neuropsychological care. She earned her Ph.D. in clinical and counseling psychology from the University of South Alabama. Some of Dr. Fields’ clinical interests include ADHD, learning disorders, Autism Spectrum Disorder, dementia, and cerebrovascular accidents. She also appreciates differentiating between psychiatric and medical disorders, and acquired and/or organic brain dysfunctions. When the weather is kind, Dr. Fields may be found with family and friends; eating, adventuring, reading, and actively participating in life.

Dr. Len Dannhaus, Psy.D.


Dr. Len Dannhaus recently completed his Pre-Doctoral Internship and a year of Post-Doctoral Supervision at the Sheridan VA Medical Center in Sheridan, Wyoming where he co-facilitated the PTSD residential Cognitive Processing Therapy Cohort.  He obtained his Doctorate in Clinical Psychology with a focus in Military Psychology from The Adler School of Professional Psychology in 2018.  He recently joined Thomson Memory Center as a Postdoctoral Fellow in July of 2019. Dr. Dannhaus's clinical interests include Traumatic Brain Injury, Chronic Traumatic Encephalopathy, long term effects of TBI, and Post-traumatic Stress Disorder diagnosis and treatment.  He enjoys baseball, has recently taken up fly fishing, and spending his time with his family.

Dr. Mandy Schnibben, Psy.D.


Dr. Mandy Schnibben completed her Doctorate in clinical psychology at Antioch University in Santa Barbara in 2014. She joined the Thomson Memory Center in August of 2014 after completing her internship in Forensic Psychology at Elgin Mental Health Center where she underwent training in psychopathology and evidence-based interventions. While practicing at Thomson Memory Center, Dr. Schnibben earned over 3,000 fellowship hours through therapy and evaluations. Her previous experience includes; rotations at Cognitive Fitness and Innovative Therapies (CFIT) and at the California Department of Rehabilitation. Her clinical interests include emotional dysregulation, dementia, cognitive rehabilitation due to neurological disorders, TBI, ADHD, and Stroke. Dr. Schnibben currently resides with her family in the southwest suburbs.

Dr. Monica Gamez, Psy.D.


Dr. Monica Gamez earned her Doctorate in clinical psychology from Nova Southeastern University with a concentration in neuropsychology. She joined Thomson Memory Center in 2018 after completion of her internship at Memorial Regional Hospital in Hollywood, FL. Dr. Gamez has experience conducting neuropsychological evaluations in clinical and research settings for individuals of all ages, with a particular interest in the geriatric population. Clinically she enjoys focusing towards dementia, neurocognitive disorders, TBIs, stroke, learning disorders, and other neurodevelopmental disorders. She is a fluently bilingual and bicultural clinician who is experienced with assessment in both English and Spanish.

Dr. Gamez grew up in Miami, FL and enjoys exercising, concerts, sporting events, and traveling.


Nader Joudeh, MA, LPC


Nader Joudeh was awarded his Master’s in Clinical Psychology from Governor State University and works primarily through a cognitive/behavioral approach. He focuses largely on individualized adult and lifespan therapies, with training directly related to phase of life transitions, identity development, job and/or relationship stress, emotional and behavioral concerns, in addition to one-on-one experience with Autism cases.

Nader completed his internship with Innovation in Learning where he provided services for children, adolescents, and adults with developmental/social difficulties, emotional disturbances, trauma, and aggression. In his spare time, he has volunteered extensively throughout the community assisting low-income families with essential goods and services, as well as helping to educate the community on assistance programs and public benefits.  

Dr. Nickolas Armstrong, Psy.D.


Dr. Nickolas Armstrong received his Doctorate in psychology from The Chicago School of Professional Psychology with focuses in both neuropsychology and health psychology. He completed his internship at Vanderbilt University Medical Center specializing in the evaluation of dementia, epilepsy, and ADHD, while also gaining additional experience with psychological evaluations for surgical weight loss, clinical hypnosis, and evidence-based psychotherapy. With experience in assessing patients of all ages, Dr. Armstrong has a particular emphasis on adult and geriatric patients.

During his free time Dr. Armstrong enjoys gardening, exercise, and spending time with friends and family.

Dr. Rebecca Yesian, Psy.D.


Dr. Rebecca Yesian recently completed her internship at the VA Southern Oregon Rehabilitation Center and Clinics and obtained her Doctorate in clinical psychology with a focus in neuropsychology from Pacific University in Oregon. She joined Thomson Memory Center in 2018 as a post-doctoral fellow.

Dr. Yesian's clinical interests include assessment of individuals displaying a wide range of presenting problems, including, brain injury, dementia, movement disorders, and stroke. Dr. Yesian enjoys reading, spending time with her family, and outdoor activities. 

Stephanie Lafontaine, MA, LPC


Serving our pediatric, school aged, and college population, Stephanie Lafontaine practices many different types of therapy. She joins us after earning her Bachelor’s in Psychology and Master’s in Clinical Psychology from Roosevelt University, where she achieved a place on the Dean’s List. Her prior schooling at Southern Illinois College and Western Kentucky University helped to introduce her to difference perspectives and cultural experiences by competing on both forensics’ teams winning Nationals twice and Internationally.

Stephanie completed her internship with Erie Neighborhood House and Community Center in Chicago and specializes in individualized therapy, trauma, mindfulness-based relaxation, and strongly believes play therapy to be a wonderful way to understand the world and perspective of a child. Her strengths can be utilized to aid in rectification of anxiety, attention disorders, developmental delays, social inhibition, and more.



(Click for map)


Algonquin, IL

1451 Merchant Dr.

Algonquin, IL 60102


Barrington, IL 

120 N. Northwest Hwy.

Barrington, IL 60010


Chicago - Lincoln Park, IL

939 W. North Ave. Ste 750

Chicago, IL 60642


Deerfield, IL

500 Lake Cook Rd. Ste 350

Deerfield, IL 60015


Hoffman Estates, IL

2300 Barrington Rd. Ste 400

Hoffman Estates, IL 60169


Oak Brook, IL

700 Commerce Dr. Ste 500
Oak Brook, IL 60523

Park Ridge, IL

350 S. Northwest Hwy. Ste 300

Park Ridge, IL 60068


St. Charles, IL

100 Illinois St. Ste 200

St. Charles, IL 60174



Lake ElmoMN

8530 Eagle Point Blvd Ste 100

Lake Elmo, MN 55042


Roseville, MN

2355 Highway 36 West Ste 400

Roseville, MN 55113


IL: (847) 469-7537

MN: (612) 224-2644

Fax: (847) 469-7540




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