Patient Portal

Angela M. Reiersen, MD

Assistant Professor, Psychiatry

Specialty Areas

Child Psychiatry
Child and Adolescent Psychiatry

Board Certifications


Hospital Affiliations

Barnes-Jewish Hospital
St. Louis Children's Hospital

Areas of Clinical Interest

Dr. Reiersen is the child & adolescent psychiatry assessment supervisor for the First Contact Assessment Service, which evaluates individuals who are showing early signs of a possible psychotic disorder such as schizophrenia. In addition to assessment by a psychiatrist, First Contact assessments include diagnostic interviews and cognitive testing by a psychologist. The First Contact Assessment Service generally does not follow patients over time, but provides evaluation reports to the treating psychiatrist. Before making an appointment with the First Contact Assessment Service, patients should already have a treating physician who is willing to provide ongoing treatment. In order to facilitate communication of treatment recommendations, the contact information for this treating physician (usually a psychiatrist) should be provided prior to scheduling the evaluation.

  • Education
  • Publication & Research



Residency: Child and Adolescent Psychiatry, Washington University School of Medicine, St. Louis, Missouri 2004
Residency: General Psychiatry, Washington University School of Medicine, St. Louis, Missouri 2002
Medical Degree: University of Southern California School of Medicine, California 1999
B.S. : Biological Sciences, University of Southern California - Davis, California 1994

Publication & Research

Publication & Research

Bischoff Allison N,Reiersen Angela M,Buttlaire Anna,Al-Lozi Amal,Doty Tasha,Marshall Bess A,Hershey Tamara, ,Selective cognitive and psychiatric manifestations in Wolfram Syndrome.2015 May 30;10:66;  

De Alwis Duneesha,Agrawal Arpana,Reiersen Angela M,Constantino John N,Henders Anjali,Martin Nicholas G,Lynskey Michael T,ADHD symptoms, autistic traits, and substance use and misuse in adult Australian twins.75:211-21;  

Reiersen Angela M,Todorov Alexandre A,Association between DRD4 genotype and Autistic Symptoms in DSM-IV ADHD.20:15-21;  

Ramtekkar UP, Reiersen AM, Todorov AA, Todd RD (2010 Mar). Sex and age differences in attention-deficit/hyperactivity disorder symptoms and diagnoses: implications for DSM-V and ICD-11. J Am Acad Child Adolesc Psychiatry. 49(3): 217-28.e1-3.  

Todd RD, Huang H, Todorov AA, Neuman RJ, Reiersen AM, Henderson CA, Reich WC (2008 Jan). Predictors of stability of attention-deficit/hyperactivity disorder subtypes from childhood to young adulthood. J Am Acad Child Adolesc Psychiatry. 47(1): 76-85.  

Reiersen AM, Constantino JN, Todd RD (2008 Jun). Co-occurrence of motor problems and autistic symptoms in attention-deficit/hyperactivity disorder. J Am Acad Child Adolesc Psychiatry. 47(6): 662-72.  

Areas of Research Interest

Autistic-like social deficits in children with attention-deficit/hyperactivity disorder, autistic traits in schizophrenia, schizophrenia precursors, prodromal schizophrenia, and genetics of childhood-onset psychiatric disorders.