Manhattan TMS 

To learn more about Dr. Ziv E. Cohen, visit:

Ziv Ezra Cohen, M.D.

Dr. Cohen has native fluency in both Hebrew and English.

@ ​Principium Psychiatry

Clinical Psychiatry
Dr. Cohen maintains a private practice working with patients on areas such as trauma, depression, anxiety, and ADHD, as well as work, relationships, and identity.  

Trauma and PTSD
Mood Disorders
Anxiety Disorders
ADHD and attentional problems
Addiction (substance, behavioral) 
​Expert Testimony


Copyright Principium Psychiatry, PLLC. All rights reserved. 

Forensic Psychiatry
Dr. Cohen has worked on cases involving competency to stand trial, dangerousness, suicide, psychiatric standard of care, addiction, and state of mind at the time of an offense.  He brings his expertise in psychiatry and wide ranging clinical experience to a broad range of forensic psychiatric issues.

Experienced psychiatrist. Innovative treatments. 

Ziv Ezra Cohen, M.D., is Clinical Assistant Professor of Psychiatry at Weill Cornell Medical College of Cornell University, and on the medical staff of New York Presbyterian Hospital, both in New York City.

Dr. Cohen obtained his medical degree from Albert Einstein College of Medicine in New York City. He completed his residency in psychiatry at Weill Cornell Medical Center/New York Presbyterian Hospital, also in New York.  He completed research and clinical fellowships in forensic psychiatry at Columbia College of Physicians and Surgeons.  

In addition, Dr. Cohen has served as a staff psychiatrist in the military, where he gained experience with psychological trauma, PTSD, and military psychiatry.

Dr. Cohen is a Fellow of the American Psychiatric Association, a member of the New York Academy of Medicine, and President of the New York Society for Adolescent Psychiatry.

Sexual Intimacy
Mental Health and the Law 
Medical-Legal Issues