Mark Zimmerman, MD

Expert Q&A

Diagnosing Borderline Personality

May 1, 2026

Chief of Ambulatory Psychiatry and Behavioral Health, South County Psychiatry. Former professor of psychiatry and human behavior, Warren Alpert Medical School, Brown University.

Dr. Zimmerman reports he is on the speaker’s bureau of Intra Cellular Therapies and a research consultant with GH Research. This article was reviewed by Dr. Aiken, Editor-in-Chief, who has concluded that there is no evidence of commercial bias in this educational activity.

Dr. Zimmerman explains why BPD is underdiagnosed and how a single high-yield screening question can change your assessment.

Anxious Distress: A New DSM Diagnosis

May 1, 2018

Mark Zimmerman, MD

Mark Zimmerman, MD Director of the Partial Hospital Program and Adult Outpatient Psychiatry at Rhode Island Hospital Dr. Zimmerman has disclosed that he has no relevant financial or other interests in any commercial companies pertaining to this educational activity.

There’s a new diagnosis in the DSM-5 called anxious distress. But is this truly a new diagnosis, or just another way of defining depression? This month, we spoke with Mark Zimmerman, MD, a clinician and leading researcher on the topic of anxious distress, to get some answers.

Diagnosing Personality Disorders: The Latest Trends

March 1, 2012

Mark Zimmerman, MD

Mark Zimmerman, MD Director of outpatient psychiatry, Rhode Island Hospital and The Miriam Hospital, Providence, RI Dr. Zimmerman discloses that he has received research grant support from Eli Lilly to study the validation of a scale. Dr. Balt has reviewed this article and found no evidence of bias in this educational activity.

In 2013, the American Psychiatric Association (APA) plans to release the fifth edition of the DSM. We are all aware that there may be some significant changes in personality disorder criteria in the DSM-5, which has created some controversy.