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Deirdre Johnston, M.D., M.B. B.CH. B.A.O.

Mary C Johnston, M.D., M.B. B.CH. B.A.O.

Headshot of Deirdre Johnston
  • Assistant Professor of Psychiatry and Behavioral Sciences


Adult Psychiatry, Forensic Psychiatry, Geriatric Psychiatry, Memory Disorders, Psychiatry, Psychiatry and Behavioral Sciences more

Research Interests

Memory Disorders; Aging in Place; Outreach mental health care for homebound elders more

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The Johns Hopkins Hospital

Appointment Phone: 410-955-6158
600 N. Wolfe Street
Meyer Building, Suite 235
Baltimore, MD 21287 map


Dr. Johnston is Medical Director of MIND at Home, a program that provides pro-active care coordination to persons with memory disorders at home. MIND at Home was tested in two large-scale federally funded studies and shown to improve outcomes for persons with dementia and their caregivers in the community. She is also Medical Director of the PATCH Program (Psychogeriatric Assessment and Treatment in City Housing) which provides outreach mental health services to low-income seniors in Baltimore City. Dr Johnston was an early telemedicine user at Johns Hopkins. She introduced mobile telehealth to both the PATCH program, to increase access to care for frail seniors in the community, and in MIND at Home, to provide support to Memory Care Coordinators and family caregivers in participants' homes.

In 2008, the American Association for Geriatric Psychiatry created the AAGP Deirdre Johnston Award for Excellence and Innovation in Geriatric Mental Health Outreach Services, to encourage programs providing mental health services to the frail elderly in their homes. 

Previousl, at Wake Forest University School of Medicine, Dr Johnston 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 and the Deirdre Johnston award were made possible by generous gifts 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 and is certified by the American Board of Psychiatry and Neurology and the subspecialty of Geriatric Psychiatry more


  • Assistant Professor of Psychiatry and Behavioral Sciences

Departments / Divisions



  • MD; University College Hospital (1979)


  • Psychiatry; University College Hospital (1985)
  • Psychiatry; University of Alberta-Falculty of Medicine & Dentistry (1989)

Board Certifications

  • American Board of Psychiatry and Neurology (Geriatric Psychiatry) (1994)
  • American Board of Psychiatry And Neurology (Psychiatry) (1992)

Research & Publications

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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