Nathan J. Blum, MD

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Nathan J. Blum, MD, is Chief of the Division of Developmental and Behavioral Pediatrics at Children’s Hospital of Philadelphia.

Areas of Expertise: Attention-Deficit/Hyperactivity Disorder (ADHD), Children with chronic illness/developmental disabilities, Pediatric behavior problems
Locations: Specialty Care, Market Street

Appointments and Referrals: 1-800-TRY-CHOP (1-800-879-2467)

Education and Training

Medical School

MD - Johns Hopkins University School of Medicine, Baltimore, MD


Pediatrics - The Children's Hospital of Philadelphia, Philadelphia, PA


Developmental-Behavioral Pediatrics - The Children's Hospital of Philadelphia, Philadelphia, PA

Board Certification

Developmental-Behavioral Pediatrics – American Board of Pediatrics
Pediatrics – American Board of Pediatrics

Titles and Academic Titles

Division Chief, Division of Developmental and Behavioral Pediatrics

Director, Leadership Education in Neurodevelopmental and Related Disabilities Program

William H. Bennett Professor of Pediatrics

William T. Grant Endowed Chair in Child Development and Rehabilitation

Professor of Pediatrics, Perelman School of Medicine at the University of Pennsylvania

Departments and Services

Research Interests

Behavior problems



Blum NJ, Bird LM, Stein MT. Global developmental delay in a 10-month-old infant boy. J Dev Behav Pediatr. 2010 Apr;31(3 Suppl):S46-8. Read abstract

Huang P, Blum NJ. Developmental and behavioral disorders grown-up-intellectual disability. J Dev Behav Pediatr. 2010 Jan;31(1):61-71. Review. No abstract available.


Selected Publications
Blum NJ, Williams GE, Friman PC, and Christophersen ER. Disciplining young children: the role of verbal instructions and reasoning. Pediatrics. 1995;96:336-341.

Blum NJ, Mauk JE, McComas JJ, Mace FC. Separate and combined effects of methylphenidate and a behavioral intervention on disruptive behavior in children with mental retardation. Journal of Applied Behavior Analysis. 1996;29:305-319.

Power TJ, Blum NJ, Jones SM, Kaplan PS. Brief report: responsiveness to methylphenidate in two children with Williams Syndrome. Journal of Autism and Developmental Disorders. 1997;27:79-87.

Blum NJ, Mercugliano M. Attention-deficit hyperactivity disorder. In: Batshaw ML, Perret YM, editors. Children with disabilities: a medical primer, 4th edition. Baltimore: Brookes Publishing, Co; 1997. p. 449-470.

Meyer GA, Blum NJ, Hitchcock W, Fortina P. Absence of the fragile X CGG trinucleotide repeat expansion in females diagnosed with a pervasive developmental disorder. Journal of Pediatrics. 1998; 133:363-365.

Blum, NJ. Repetitive behavior. In: Levine, MD, Carey, WB, Crocker, AC, editors. Developmental-behavioral pediatrics, 3rd Edition. Philadelphia, W.B. Saunders; 1999. p. 430-442.

Mercugliano M, Power TJ, Blum NJ. The clinician's practical guide to attention-deficit/hyperactivity disorder. Baltimore: Brookes Publishing; 1999.

Mace FC, Blum NJ, Sierp B, Delaney B, Mauk JE. Behavioral versus pharmacologic treatment of operant self-injury. Journal of Developmental and Behavioral Pediatrics. 2001;22:85-91.

Blum NJ, Taubman B, Nemeth N. Relationship between age at initiation of toilet training and duration of toilet training: a prospective study. Pediatrics. 2003;111:810-814.

Wang PP, Blum NJ. Williams Syndrome. In: Wolraich MW, editor. Disorders of development and learning, 3rd edition. Ontario, Canada: BC Decker Inc; 2003. p. 283-298.

Blum NJ, Taubman B, Nemeth N. Why is Toilet Training Occurring at Older Ages? A Study of Factors Associated with Later Training. Journal of Pediatrics 2004;145:107-111.

Blum NJ. Nocturnal enuresis: behavioral treatments. Urology Clinics of North America. 2004;31:499-507.

Editorial and Academic Positions

Program Chairperson, Society for Developmental-Behavioral Pediatrics, 2004-Present

Medical Editor, Sub-Board of Developmental-Behavioral Pediatrics, American Board of Pediatrics, 2000-Present