Jon Grant, M.D., J.D., M.P.H., is a Professor of Psychiatry at the University of Chicago and directs the ACID research lab for at the University of Chicago Medical Center in Chicago, IL. Dr. Grant completed an undergraduate degree at the University of Michigan, a master’s degree at the University of Chicago, a law degree from Cornell University, a medical degree from Brown University, and a masters degree in public health from Harvard University. Dr. Grant is a board-certified psychiatrist. 

Dr. Grant has written over 400 peer-reviewed articles and book
chapters on the phenomenology and pharmacological management of substance use disorders and impulse control disorders, particularly pathological gambling, kleptomania, and grooming disorders. He is the author of “Stop Me Because I Can’t Stop Myself,” a book on impulse control disorders published by McGraw-Hill (2002) (co-authored with Dr. Suck Won Kim), and is the co-editor (along with Marc Potenza) of two books published by the American Psychiatric Association Pathological Gambling: “A Clinical Guide to Treatment” (2004) and “A Textbook of Men’s Mental Health.” He also lead-authored a book on the treatment of impulse control disorders using evidence-based cognitive behavior therapy (with Brian Odlaug and Chris Donahue).  Dr. Grant’s research is funded by the National Institutes of Mental Health.

Ash Ehsan, MD., is an Assistant Professor of Psychiatry and Behavioral Neuroscience. He received his medical degree at the University of Oklahoma College of Medicine and completed his residency in Adult Psychiatry at the University of Chicago.

Zehra Aftab, MD., is an Assistant Professor of Psychiatry and Behavioral Neuroscience. She received her medical degree at University at Buffalo Jacobs School of Medicine and Biomedical Sciences and completed her residency in General Adult Psychiatry at Thomas Jefferson University.

Andrea King, Ph.D., is a Professor of Psychiatry & Behavioral Neuroscience.  She received her doctoral degree from the University of Oklahoma Health Sciences Center and completed her internship at the University of Pennsylvania. Dr. King’s primary goal is to examine the mechanisms of vulnerability to substance use disorders and to identify efficacious behavioral and pharmacological interventions for treatment of addiction.  The main focus of her research has concentrated on the etiology and treatment of alcohol and nicotine dependencies. Dr. King’s work in the Clinical Addictions Research Lab has particularly focused on individual differences among drug users and what factors contribute to developing chronic, maladaptive use of various drugs of abuse. She also focuses on improving clinical methodology for traditionally underserved minority groups. Her work has earned numerous institutional awards at both the University of Chicago and University of Oklahoma Health Sciences Center.  Additionally, students and post-doctoral mentees in her lab have won national awards from the Research Society on Alcoholism.

Shona Vas, PhD, is an Assistant Professor, Director of the Cognitive-Behavior Therapy Program, and Associate Director of Psychology Training at the University of Chicago. Her clinical and research interests include OCD, CBT, anxiety and mood disorders, couples therapy, women’s health, and cultural competence.

Peter Warnke, MD, has performed more than 3,000 stereotactic surgeries and more than 1,000 brain tumor surgeries. Dr. Warnke routinely performs neurosurgical procedures with proven expertise, including: brain tumor surgery, epilepsy surgery, deep brain stimulation, endoscopic neurosurgery, stereotactic radiosurger, motor cortex stimulation, radiofrequency lesioning, and laser ablation. He has collaborated with the ACID program particularly in the area of obsessive compulsive disorder, and has performed several neurosurgical procedures for the treatment of OCD.

Daniel Fridberg, Ph.D. is a postdoctoral scholar in the Department of Psychiatry and Behavioral Neuroscience. He completed a Ph.D. in clinical psychology at Indiana University and a predoctoral clinical internship at the VA Connecticut Healthcare System in West Haven, CT. Dr. Fridberg has provided individual and group psychotherapy to persons with addictions, and is well-versed in cognitive-behavioral, motivational enhancement, relapse prevention, and coping skills approaches. He also provides cognitive-behavioral therapy to patients with mood and anxiety disorders, and provides consultation to the University of Chicago liver transplant team.   Dr. Fridberg’s research focuses on mechanisms of addiction and novel treatments for addictive disorders.

Sam Chamberlain, MB/BChir PhD, is a psychiatric physician based at the Department of Psychiatry, University of Cambridge UK and at Fulbourn Hospital, Cambridge UK. Dr. Chamberlain is an expert in neurocognitive testing and collaborates with the ACID group on various clinical trials and presentations.