About Us

Dr. Sarfaty | Dr. Karassik | Dr. Steinberg | Dr. Johnston |

| Dr. Covington | Dr. Fox



Stephen D. Sarfaty, Psy.D., Director

Dr. SarfatyDr. Stephen D. Sarfaty received his Bachelor's in Psychology from Livingston-Rutgers in 1977 and his Doctor of Psychology from the Illinois School of Professional Psychology in 1981. He is a Diplomate with The American Board of Professional Neuropsychology, The American Board of Clinical Neuropsychology and The American Board of Professional Disability Consultants. A well-known Connecticut neuropsychologist, he was appointed to the Governor's Task Force on Traumatic Brain Injury, and was a member of the charter Board of Directors of the Brain Injury Association of Connecticut and leader for ten years of the Association's Gaylord Hospital weekly traumatic brain injury satellite support group.

He is Director of Comprehensive Neuropsychological Services, P.C., (CNS), in Cheshire, Connecticut, and a consulting neuropsychologist to a number of area hospitals and programs. He was Assistant Clinical Professor at the University of Hartford, taught at Quinnipiac College and lectured at Yale University. He presents to many professional and public groups across Connecticut, around the country and internationally. He has contributed to the development of validity determination protocols for forensic neuropsychological examinations. He was a recipient of the Brain Injury Association's 1988 and 1991 awards for Meritorious Service.

Dr. Sarfaty and his staff are committed to the provision of quality, client-centered services. They are also committed to advocacy for the improvement of both quality health care delivery and valued social roles for variously abled persons.

Dr. Sarfaty also serves as a consulting and testifying expert witness in cases of traumatic brain injury.

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Dr. KarassikBeth Karassik, Ph.D.

Dr. Beth Karassik is a licensed psychologist with broad-based experience spanning 20 years in clinical and forensic psychology and neuropsychology.  Her training affords her a deep understanding of what drives, motivates and sustains human behavior.  Dr. Karassik is a well-known and respected pediatric neuropsychologist with Comprehensive Neuropsychological Services, P.C. and has provided breakthrough performance coaching with Performance First, Inc. 

Dr. Karassik received her Ph.D. in Clinical Psychology from Emory University in 1989.  She completed her post-doctoral neuropsychology training in California at St. Jude Hospital and Rehabilitation Center and at NeuroCare.  She has been trained as a Divorce Coach and Child Specialist in the Collaborative Practice of Divorce.  Dr. Karassik consults with physicians, attorneys, and educators regarding differential diagnosis, educational planning and treatment recommendations for children and adults with a broad range of neuropsychological, learning, emotional, and behavioral disorders. She provides expert testimony in depositions and in court. Dr. Karassik also provides outpatient psychological and neuropsychological services to both children and adults.  Her practice has more recently expanded to include working with divorcing families as a Coach and Child Specialist.

Dr. Karassik is a Diplomate with the American Board of Professional Disability Consultants.  She is a member of the American Psychological Association, the Connecticut Psychological Association, the Connecticut Neuropsychological Society (past-secretary), the Brain Injury Association of Connecticut, the Connecticut Council for Divorce Mediation and Collaborative Practice, and the International Academy of Collaborative Professionals.  Dr. Karassik is affiliated with the Collaborative Divorce Team of Connecticut and Divorce Solutions of Connecticut as both a Divorce Coach and Child Specialist.

Dr. Karassik is committed to supporting children, adults and families in creating new possibilities for the future and transforming their lives in ways that align with the fulfillment of their dreams and serve their best interests.

Dr. Karassik joined Comprehensive Neuropsychological Services in 1992.

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Brett A. Steinberg, Ph.D.

Dr. SteinbergDr. Brett A. Steinberg is a neuropsychologist who specializes in neurological and psychiatric disorders of adulthood, old age, and adolescence. After earning his B.S. in psychology from the
University of Massachusetts in Amherst, Massachusetts, and his Ph.D. in clinical psychology from the University of South Carolina in Columbia, South Carolina, he completed his pre doctoral internship at the Gainesville Department of Veterans Affairs Medical Center and the University of Florida Health Sciences Center in Gainesville, Florida, and his postdoctoral fellowship in clinical neuropsychology at the University of Michigan Medical Center in Ann Arbor, Michigan.

In addition to providing diagnostic and psychotherapeutic services to individuals, couples, and families in a variety of outpatient and inpatient settings, Dr. Steinberg has served as a consultant to the New Haven Superior Court for Juvenile Matters and to the Learning Disabilities Association of Connecticut. As an investigator, he has conducted behavioral and functional neuroimaging research on age-related changes in brain structure and mental abilities, has studied the influence of concussion on
cognitive processes and the effects of practice and pre morbid cognitive ability on neuropsychological test scores, and has explored factors that affect jurors’ decision-making and retention of information presented at trial.

Dr. Steinberg has served as Assistant Professor of Neuropsychology and Clinical Psychology in the Department of Psychology at the University of Connecticut in Storrs, Connecticut, and as Adjunct Assistant Professor of Psychiatry in the Department of Psychiatry at the University of Connecticut School of Medicine in Farmington, Connecticut. He has taught graduate courses in neuropsychological assessment, research design, and the neurobiology of aging. In addition, he has taught introductory psychology at the undergraduate level and has trained psychiatry residents and clinical psychology interns. His administrative and professional activities have included serving as a member of the University of Connecticut’s Institutional Review Board, as secretary of the Association of Doctoral Education in Clinical Neuropsychology, and as a member of the International Neuropsychological Society’s Scientific Program Committee.

Dr. Steinberg joined Comprehensive Neuropsychological Services, P.C., in 2003.

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J. Dennis Johnston, Ph.D.Dr. Johnston

Dr. Dennis Johnston completed his doctoral training as a Clinical Psychologist at the University of Connecticut in Storrs. He then held a two-year Post-Doctoral Fellowship in Neuropsychology at the Institute of Living in Hartford. Since 1989, he has been providing psychological and neuropsychological services with Comprehensive Neuropsychological Services. Since 1992, he has served as Director of Neuropsychological Services at Hospital for Special Care in New Britain, Connecticut.

Dr. Johnston provides diagnostic and treatment services to individuals, couples, families and groups. He specializes in the assessment and treatment of individuals with brain-related problems, such as acquired brain injury, dementia, stroke, learning disabilities, attention deficit disorder, etc. He provides rehabilitative psychotherapy for individuals and families who are coping with the consequences of various neurological conditions, and has extensive experience helping people with adjustment disorders or anxiety conditions.

He has published articles or presented talks in his areas of expertise, is certified by the American Board of Professional Disability Consultants, and maintains a number of professional memberships. He is past-president of the Connecticut Neuropsychological Society.

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Theresa M. Covington, Ph.D.
Dr. Covington

Dr. Theresa Covington completed her doctoral training as a Clinical Psychologist, with a specialization in neuropsychology, at Pacific Graduate School of Psychology, in Palo Alto, California, in 1993. She completed her pre-doctoral internship at the Veterans Affairs Medical Center, Palo Alto, California, where she worked with traumatic brain injury patients, veterans with PTSD, and geriatric patients suffering from dementias. She then obtained advanced training in two post-doctoral fellowships in neuropsychology. The first was at the University of Rochester, School of Medicine, Rochester, New York, with rotations in neuropsychiatry, movement disorders, and an Alzheimer’s Disease Research Center. The second fellowship was at the University of California, at Davis, Medical Center, in Sacramento, California, at the Alzheimer’s Research and Clinical Center.

Following her training, Dr. Covington worked for the Veterans Administration hospitals in upstate New York for 7 years. She served in the capacity of neuropsychologist and director of training for the pre-doctoral internship program. Dr. Covington moved to Connecticut with her family in 2002. She has been affiliated with Comprehensive Neuropsychological Services since that time. During the same period, she has worked at Hartford Hospital/Institute of Living, serving for one year in the role of Director of Psychology Testing. She currently is Director of the Hartford Hospital Memory Disorders Center, a program she helped to found that focuses on the early detection of dementia.

Dr. Covington specializes in neuropsychological assessment and rehabilitative and therapeutic treatment of adults suffering from a wide range of neuropsychiatric, acquired brain, and adjustment disorders.

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Diana G. Fox, Psy.D.

Dr. FoxDr. Diana G. Fox earned her B.A. in Psychology from Cornell University in Ithaca, New York prior to receiving her Psy.D. degree in Clinical Psychology from Yeshiva University in Bronx, New York. Following graduation, Dr. Fox completed a post-doctoral fellowship at Pace University in Pleasantville, New York, where she arranged disability accommodations for students in addition to providing individual and group psychotherapy.

A continuing research interest was found when Dr. Fox served as the Juvenile Fibromyalgia Assessment and Treatment Program Coordinator at Schneider Children’s Hospital in New Hyde Park, NY. As program coordinator, she oversaw the multidisciplinary treatment team, trained psychology pre-doctoral interns in the treatment protocol, and developed a group treatment format. Dr. Fox and her colleagues at the fibromyalgia program have reported on several studies indicating the significant impact of disturbed sleep in the syndrome.

Additionally, Dr. Fox has taught courses in general psychology, child and life-span development, and research methods at Central Connecticut State University.

Dr. Fox joined Comprehensive Neuropsychological Services, P.C. in 2004.

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