Suffolk Office Phone: 631-676-1962
Nassau Office Phone: 516-686-9554

Heather Henkell, PhD     C.V.

Dr. Heather Henkell is the director of the Nassau office.  She completed her Ph.D. in Clinical Neuropsychology in September 2013. Her dissertation examined the cognitive and neural processes underlying factual and perceptual based relational judgments. She completed an APA-accredited internship at The Colorado Mental Health Institute at Pueblo (CMHIP), completing rotations in neuropsychology, social-learning program, and on the locked adolescent unit.

Brittany Bascetta, PhD  C.V.

Dr. Brittany Bascetta is the director of the Suffolk office. Additionally, she holds an appointment as Adjunct Faculty in the Clinical Psychology Doctoral Program at Adelphi University, Gordan F. Derner School of Psychology.  She completed her Ph.D. in Clinical Neuropsychology through the CUNY Graduate Center in 2017. Her dissertation examined the cognitive deficits associated with hippocampal NMDAR autoantibodies in lupus patients. During graduate school, she completed practicum training at Memorial Sloan Kettering Cancer Center, Columbia University Medical Center's Comprehensive Epilepsy Center, and the Weill Cornell Medical College/New York Presbyterian, Westchester Division. She completed an APA-accredited internship in the neuropsychology service at the Henry Ford Health System's hospital in Detroit. During her internship year, she additionally completed a rotation in the Normal Pressure Hydrocephalus clinic as well as Health Psychology rotations in the Cardiology and Trauma Surgery units.  She completed her post-doctoral fellowship at LINS.  She has performed diagnostic assessments with children and adults in the context of developmental disorders, ADHD, psychiatric illness, concussion/traumatic brain injury, oncology, autoimmune disorders, cardiovascular disease and neurologic disease.

Emily D'Antonio, PhD

Dr. D'Antonio completed her Ph.D. in Clinical and School Psychology at Hofstra University in 2011. She completed an APA accredited internship at the Clinical Neuroscience Center at Pilgrim Psychiatric Center, and a postdoctoral fellowship in neuropsychology and rehabilitation research at the Brain Injury Research Center at the Icahn School of Medicine at Mount Sinai. After fellowship, she directed the Neuropsychology Service at the New York State Psychiatric Institute, where she provided clinical services and held an academic appointment at Columbia University College of Physicians and Surgeons. She has experience providing diagnostic evaluations with individuals across the lifespan to assess for learning disabilities, developmental disorders, traumatic brain injuries, psychiatric illnesses and neurologic disease. 

Melissa Hillebrecht, Psy.D.

Dr. Hillebrecht earned her Psy.D. in Clinical Psychology from Immaculata University and specialized in Neuropsychology. She completed her predoctoral internship at the Northport Veterans Affairs Medical Center and underwent advanced training during her post-doctoral fellowship at Neuropsychology Rehabilitation Services/Lifespan Behavioral Health. She received extensive clinical training within inpatient/hospital settings, outpatient/residential/day neurorehabilitation programs, and private practice/outpatient clinics. Dr. Hillebrecht also attained her M.A. in School Psychology from Iona College and gained work and consulting experience that focused on improving academic success and social-emotional wellbeing of children in general and special education programs.

Dr. Hillebrecht’s diverse background afforded her opportunities to work with a wide range of conditions, including neurological issues (i.e. brain injury, dementia, stroke, MS, epilepsy), medical conditions (i.e. cancer, brain tumors), psychological conditions (i.e. adjustment issues, anxiety, depression, PTSD, mood disorders, schizophrenia), and developmental disabilities (i.e. ADHD, learning/intellectual disabilities).     


Brian K. Lebowitz, PhD ABPP-CN    C.V.

Dr. Lebowitz completed a neuropsychology fellowship at Harvard Medical School.  He has published research in peer reviewed journals in the areas of concussion and mild traumatic brain injury, moderate/severe brain injury, psychiatric and psychological factors associated with brain injury, and psychiatric illness.

Amber Sousa, PhD

Dr. Sousa completed her Ph.D. in 2013. Her dissertation focused on saccadic eye movement rate during memory tasks in older adults and adults with memory impairments. Her internship and post-doctoral work focused on clinical neuropsychological assessment of adult and geriatric patients. While in graduate training, Dr. Sousa completed practicum training at Stony Brook University Medical Center, Mt. Sinai Hospital, Columbia Presbyterian Medical Center, and New York Hospital.  She has performed diagnostic assessments with children and adults in the context of learning disorders, ADHD, psychiatric illness, traumatic brain injury, and neurologic disease.  She currently works at the Feinstein Institute for Medical Research in Alzheimer's Disease research and focuses on the assessment, diagnosis, and treatment of neurodegenerative disorders.



Long Island Neuropsychological Services, PLLC
Suffolk Office
111 Smithtown Bypass, Suite 223
Hauppauge, NY 11788

Phone: 631-676-1962

Nassau Office
200 South Service Road, Suite 105
Roslyn Heights, NY 11577

Phone: 516-686-9554