Arianna K. Stefanatos, PhD

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Arianna K. Stefanatos, PhD, is a pediatric neuropsychologist with the Child and Adolescent Psychiatry and Behavioral Sciences and the Metabolic Disease Program at Children's Hospital of Philadelphia.

Areas of Expertise: Metabolic disease, Mitochondrial disease, Lysosomal Storage Disorders, Congenital disorders of glycosylation, Williams syndrome, Noonan syndrome, Leukodystrophy
Locations: Buerger Center for Advanced Pediatric Care
Appointments and Referrals: 1-800-TRY-CHOP (1-800-879-2467)

Education and Training


Predoctoral Internship in Pediatric Neuropsychology - Children’s Hospital of Philadelphia, Philadelphia, PA


Leadership Education in Neurodevelopmental Disabilities (LEND) Fellowship - Children's Hospital of Philadelphia, Phildelphia, PA
Postdoctoral Fellowship in Pediatric Neuropsychology - Boston Children’s Hospital, Boston, MA and Harvard Medical School, Boston, MA

Graduate Degree

PhD in Clinical Psychology - The University of Texas, Austin, TX
MA in Clinical Psychology - The University of Texas, Austin, TX

Titles and Academic Titles

Pediatric Neuropsychologist

Departments and Services

Research Interests

Examining predictors of neurocognitive, socio-emotional and behavioral functioning within children with genetic, metabolic, and mitochondrial diseases over time




Waisbren, S.E., Stefanatos, A.K., Kok, T.M.Y., & Ozturk-Hismi, B. (2019). Neuropsychological attributes of urea cycle disorders: A systematic review of the literature. Journal of Inherited Metabolic Disease, 1-16. 

Cohen, J.L., Burfield, J., Stefanatos, A.K., Yudkoff, M., Valdez-Gonzalez, K., Samuels, A., Pedro, H., & Ficicioglu, C. (2019). Diagnosis of infantile-onset lysosomal acid lipase deficiency in the advent of available enzyme replacement therapy. Orphanet Journal of Rare Diseases, 14(198), 1-8.


Agostino, A.R., Im-Bolter, N., Stefanatos, A.K., & Dennis, M. (2016). Understanding ironic criticism and empathic praise: The role of emotive communication. British Journal of Developmental Psychology, 10.1111/bjdp.12155.

Schraegle, W.A., Nussbaum, N.L. & Stefanatos, A.K. (2016). List-learning and verbal memory profiles in childhood epilepsy syndromes. Epilepsy & Behavior, 159-165.

Posters and Presentations


Gold J.I., Stefanatos, A.K., Vanderver, A., & Cuddapah, S. (2022). Novel Treatment of Type II D-2-Hydroxyglutaric aciduria using Enasidenib, an IDH2 Inhibitor. Presented at the 43rd Annual Meeting of the Society for Inherited Metabolic Disorders, Orlando, FL.

Invited Lectures


Stefanatos, A.K. Neuropsychologic Problems and Management Options for Mitochondrial Disease. Oral presentation at the 2nd Annual Precision Mitochondrial Medicine Symposium, Children’s Hospital of Philadelphia. 2022.


Stefanatos, A.K. Motor Control: System and Function. Oral presentation at Neuropsychology Seminar Series, Children’s Hospital of Philadelphia. 2021.


Stefanatos, A.K. Assessment of Infants and Toddlers. Oral presentation at Neuropsychology Seminar Series, Children’s Hospital of Philadelphia. 2020.

Awards and Honors

2019-2020, Travel Award, Urea Cycle Disorders Consortium
2012-2014, Professional Development Award, The University of Texas
2009, David Wechsler Regents Chair in Psychology Fellowship, The University of Texas
2008, Graduated with Distinction, University of Toronto
2006, St. George’s Society Award, University of Toronto

Leadership and Memberships

Memberships in Professional Organizations

2016-present, International Neuropsychological Society