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Johnston, Deirdre, MB, BCh, BAO, MRCPsych

Assistant Professor

Main Office Address

Suite 308
The Johns Hopkins Hospital
550 N. Broadway Street
Baltimore, MD 21205

Phone: 410-955-6158
Fax: 410-614-8042


Administrative Assistant

Sally Hopkins
Phone: 420-955-5147




National University of Ireland, Galway


Surgical and Medical Internship

General Hospital Ennis, Co. Clare and University Hospital Galway


Psychiatry Residency

University Hospital Galway and Affiliated Hospitals, Western Region Psychiatry Training Program, Ireland


Psychiatry Residency

University of Alberta, Edmonton, Canada

Professional Interests

Geriatric Psychiatry; care at home for the frail elderly; PTSD in the elderly;

Forensic Psychiatry, particularly competency issues in the elderly.

Dr. Johnston is a co-investigator of the MIND at Home project, funded by the Associated of Baltimore, a study whose goal is to develop ways to support persons with memorydisorders who wish to continue living in their own homes.  Dr Johnston’s previous appointment was at Wake Forest University School of Medicine, where in recent years she was the inaugural Director of the Kate Mills Snider Geriatric Psychiatry Outreach Program (the “GO” Program), an innovative model of collaborative in-home mental health care for the frail elderly. The GO Program was made possible by a generous gift from the Snider family of Salisbury NC and New York, in honor of their mother, Kate Mills Snider, in gratitude for Dr Johnston’s care of Mrs. Snider. 

Dr Johnston holds specialty qualifications in psychiatry in the UK and in Canada, as well as in the United States. She is also certified by the American Board of Psychiatry and Neurology in the subspecialties of Geriatric Psychiatry and Forensic Psychiatry. 

Click here for a Hopkins Psychiatry Wise Newsletter interview with Dr. Johnston

Selected Publications

Johnston D: A series of cases of dementia presenting with posttraumatic stress disorder symptoms in WWII combat veterans, Journal of the American Geriatrics Society; 48:70-72. 2000.

Johnston, D and Reifler, BV: The organization and provision of Geriatric Psychiatry Services for the Elderly. In The New Oxford Textbook of Psychiatry, Oxford University Press, 2000.

Johnston D, Jones BN 3rd. Telepsychiatry consultations to a rural nursing facility: A two year experience. Journal of Geriatric Psychiatry and Neurology, 14(2):72-5, 2001.

Jones BN 3rd, Johnston D., Reboussin B, McCall WV. Reliability of telepsychiatry assessments: Subjective versus observational ratings.  Journal of Geriatric Psychiatry and Neurology, 14(2):66-71, 2001.

Johnston D, Eitel D, McCall, W.V. Electroconvulsive Therapy (ECT): An Introduction for Elderlaw Professionals. Elder’s Advisor: The Journal of Elder Law and Retirement Planning, 4(1):18-27, 2002.

Rosenberg P, Johnston D, Lyketsos CG. A clinical approach to mild cognitive impairment. Am J Psychiatry 163:11, Nov 2006.

Johnston, D: Anxiolytics and Neuroloptics in Psychiatric Aspects of Neurologic Diseases: Practical Approaches to Patient Care, eds Constantine Lyketsos, Philip Slavney, Peter Rabins, and John Lipsey. Oxford University Press, in press.

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