Diagnosis and Evaluation of Attention, Memory, Emotional, and Learning Difficulties for All Ages
Diagnosis and Evaluation of Attention, Memory, Emotional, and Learning Difficulties for All Ages

Our Doctors

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

Dr. Christina Blodgett Dycus - Founder


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 Alzheimers. 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


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


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. Anthony grew up in Chicago’s western suburbs and enjoys spending time with his children, traveling, and hiking.

Dr. Arina Polevoy


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 whil 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. Arina's hobbies include traveling and spending time with family and friends.

Dr. Calsey Fasching


Dr. Calsey Fasching joined our team in September of 2016 after completing her Doctorate at Saint Mary’s University of Minnesota and her internship at the Department of State Hospitals in California. Her current practices focus on pediatric, adult, and geriatric neuropsychological evaluations. She plans to pursue board certification in clinical neuropsychology upon completion of her fellowship. Outside of the office Dr. Fasching enjoys running and spending time with her two french bulldogs, Olaf and Alfie.

Dr. Christina Vocos


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.

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


Dr. Holly Hagen


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, Holly enjoys running, cooking, and spending time with her family.

Dr. Jason Karafa


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, Jason enjoys running, traveling, and spending time on the lake.

Dr. Kelly Fields


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, Kelly may be found with family and friends; eating, adventuring, reading, and actively participating in life.

Dr. Mandy Schnibben


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. Mandy currently resides with her family in the southwest suburbs.

Dr. Monica Gamez


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.

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


Dr. Rebecca Yesian


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. Rebecca enjoys reading, spending time with her family, and outdoor activities. 

Dr. Nickolas Armstrong


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 Nick enjoys gardening, exercise, and spending time with friends and family.

Dr. Tammy Kealey


Dr. Tammy Kealey earned her Doctorate from Adler University with a specialization in clinical neuropsychology. She completed her clinical training at Rush University Medical Center in the Movement Disorders Center in Chicago and her internship at Psychological and Neurobehavioral Services in Lakeland, FL.

Dr. Kealey specializes in conducting neuropsychological evaluations across the lifespan. Her clinical interests include head injuries, neurocognitive disorders, and neurodegenerative disorders, such as Parkinson's and Alzheimer's Disease. 

Tammy grew up in southern California and enjoys exploring the city, traveling, and trying new cuisines. 



(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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