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AIDS Psychiatry Services doctor holding patients hand advance to content

The Johns Hopkins AIDS Psychiatry Service (APS) is a multidisciplinary team formed in 1989 to provide clinical care to HIV-infected patients, as well as to develop and implement education and research programs on the psychiatric aspects of HIV infections. The APS is directed at the treatment of psychiatric conditions that drive the HIV epidemic, interfere with the treatment of HIV, or diminish the quality of life of patients infected with HIV.


Our Faculty & Staff

The APS is staffed by psychiatrists, psychologists, therapists, and psychiatric nurses.



  • Kerry O'Brien, R.N., M.S., LCPC
  • Nicholas P. Schweizer, Ed.D., M.S., LCADC, LCPC
  • Meghan Toler, M.S., LGPC
  • Mohammad Waqas, M.S., LGPC

Educational Opportunities

Medical students, residents, and fellows rotate on the various services associated with the APS (Medicine and Psychiatry).


Patients are referred to the AIDS psychiatry service by their primary provider in the John G. Bartlett Specialty Practice in The Johns Hopkins Hospital. Patients from outside the Clinic who wish to be seen should have their primary medical provider contact Dr. Treisman at 410-955-6328.

Contact Us

John G. Bartlett Specialty Practice
Park Building Ground Floor
Johns Hopkins Hospital
1717 East Monument Street Baltimore, MD 21287
Office Phone: 410-955-1725
AIDS Psychiatry Service Phone: 443-287-4566
Fax: 443-287-4173

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