Casey T. O'Brien, PsyD

Accepting New Patients
Treats Children
Virtual Visits/Telehealth
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Casey O'Brien, PsyD is a licensed clinical psychologist specializing in the treatment of children, adolescents, individuals and families with advance training in Group Psychotherapy, Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT) and Parent-Child Interaction Therapy (PCIT) and is a PCIT-International Certified clinician. Dr. O'Brien has expertise in the treatment of children and adolescents with behavioral disorders, and early-onset psychosis as well as suicidality and self-injurious behaviors.

Areas of Expertise / Conditions Treated

  • Addiction
  • Adolescent Dialectical Behavior Therapy
  • Alcohol Use Disorders
  • Bipolar Disorder
  • Cognitive-Behavior Therapy (CBT)
  • Depression
  • Dialectical Behavior Therapy (DBT)
  • Family Therapy
  • Group Therapy
  • Mindfulness
  • Motivational Enhancement Therapy
  • Obsessive Compulsive Disorder (OCD)
  • Opioid Use Disorders
  • Psychosis
  • Substance Use

Academic Appointments

  • Assistant Professor of Medical Psychology (in Psychiatry) at CUMC

Hospital Affiliations

  • NewYork-Presbyterian / Columbia University Irving Medical Center


  • Female

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Virtual Visits/Telehealth

Virtual Visits allow you to connect with your provider from the comfort, convenience, and safety of your own home.

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Phone Appointments

New and Existing Patients:

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For existing patients, login to make an appointment, view documentation or contact your care provider.

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Insurance Accepted


  • Aetna Signature Administrators
  • EPO
  • HMO
  • NYP Employee Plan
  • NY Signature
  • POS
  • PPO
  • Student Health

CHP Student Health


Quality Health Management

  • Quality Health Management


  • Behavioral Health (Columbia University Employee Plan)

World Trade Center Health Plan

  • World Trade Center Health Plan

*Please contact the provider’s office directly to verify that your particular insurance is accepted.


Selected Publications

Book Chapter
*Miller, A & O’Brien, C. (2019). DBT for Multi-Problem Adolescents. In Friedberg, R. D. & Paternostro, J. K., Handbook of Cognitive Behavioral Therapy for Pediatric Medical Conditions (119-136), Springer.
Original, Peer Reviewed Articles
*Nguyen, J., O'Brien, C., & Schapp, S. (2016). Adolescent Inhalant Use Prevention, Assessment, and Treatment: A Literature Synthesis. International Journal of Drug Policy. 31, 15-24.
Reisner, S. L., Mimiaga, M. J., Case, P., Grasso, C., O’Brien, C. T., Harigopal, P., Skeer, M., & Mayer, K. H. (2010). Sexually transmitted disease (STD) diagnoses and mental health disparities among women who have sex with
women screened at an urban community health center. Sexually Transmitted Diseases, 37(1): 5-12.
Dadd, A., Graling, K., Gerardi, N., Bonavitacola, L., Brice, C., Buzchek, M., Doughty, F., O’Brien, C., Walker, A., Miller, AL., & McGinn, L. (2019, November). The Acceptability and Feasibility of Implementing Comprehensive School-
Based DBT (CS-DBT). Poster presented at ISITDBT Convention, Atlanta, GA.
*O’Brien, C., Schapp, S., Pearlstein, J., Staudenmaier, P., Chang, K. & Cosgrove, V., (2014, November). Chronic life stress and suicidal ideation among adolescents with mood disorders. Poster presented at Association for
Behavioral and Cognitive Therapies, Philadelphia, PA.
*O’Brien, C. T., Cosgrove, V., Pearlstein, J., Chang, K., Dowdle, C., Kelman, J., Geraghty, S. & Staundenmaier, P. (2013, November). Parent and child disagreement on life stress among adolescents diagnosed with bipolar disorder or
at high risk for developing bipolar disorder. Poster presented at Association for Behavioral and Cognitive Therapies, Nashville, TN.