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UCSD Community Psychiatry Program Leadership


Steve Koh, MD, MPH, MBA

Community Psychiatry Program Director

Steve Koh, MD, MPH, MBA is Associate Clinical Professor of Psychiatry, Director of Outpatient Psychiatric Services (Hillcrest), Director of Community Psychiatry Program, Director of Tele-Mental-Health Program, and Co-Founder of Psychiatric Mental Health Nurse Practice Clinical Training Program at University of California, San Diego (UCSD). He is Consulting Faculty at Naval Hospital Balboa and Voluntary Clinical Faculty at University of San Diego, Hahn School of Nursing. He is Board Certified in Adult and Geriatric Psychiatry and carries certification for Community Psychiatry from American Association of Community Psychiatry. He graduated from Johns Hopkins University and UCSD School of Medicine. He received Masters in Public Health from Johns Hopkins Bloomberg School of Public Health (concentration in Aging and Health Leadership and Management with special area of Mental Health) and Masters in Business Administration (capstone with focus on medical consultative models) from Johns Hopkins Carey School of Business. He finished internship at Beth Israel Medical Center in New York City, general psychiatry residency at UCSD and geriatric psychiatry fellowship at UCSD. He has had research support and funding at Johns Hopkins Lipid Research Laboratories, Palo Alto VA Hospital, Intramural Program of NIH at National Institute of Aging, UCSD Department of Psychiatry, Hartford Foundation Center of Excellence, San Diego Hospice and Institute for Palliative Care, and T-32 NIH program. He has grant support from San Diego County - Work, Education and Training Program, CalREACH, CalSEARCH and California Office of Statewide Health Planning and Development. Dr. Koh is Past President of the San Diego Psychiatric Society, Association of Korean American Psychiatrists, and Board of San Diego NAMI, and past representative on the Board of American Psychiatric Association, San Diego County Medical Society, and American Association of Geriatric Psychiatry. Other organizational associations include American Medical Association, California Medical Association, and Group for Advancement of Psychiatry. Dr. Koh was American Psychiatric Association's Instructor for instructors for the DSM 5 and has been involved in DSM 5 development and review process, Member of APA Council on Advocacy and Government Relations and Political Action Committee, and past Chair of APA Early Career Psychiatrists. He was Scientific Program Committee Chair for the APA Annual Meeting in Atlanta 2016 and Vice Chair for the 2017 meeting in San Diego. Dr. Koh’s current clinical interests revolve around patients with cognitive disorders, trauma and stress, co-occurring disorders, and medically complicated patients. His research interests revolve around integrated/collaborative care with primary care, cross-professional training model, mental health systems, outcomes and service implementation projects, and usage of telementalhealth and large data. Dr. Koh has no financial disclosures or conflicts to state.



Larry Malak, MD

Clinical Training and Education Director 

Larry Malak, MD is Assistant Clinical Professor at the University of California San Diego (UCSD), Associate Director for UCSD Community Psychiatry Program, Associate Residency Training Director and Director for the Community Residency Track. He attended medical school in Houston at Baylor College of Medicine before returning to California for residency training at UC San Diego. While in residency, he served as Chief Resident in his final year at the UCSD Medical Center and won the Lewis Judd Resident Research Award for his original work looking at Psychiatric Re-admissions to UCSD. Dr. Malak is active within organized psychiatry at the national, state and local level. He has served as a Resident Representative to the San Diego Psychiatric Society council during residency and is the immediate past president. At the state level, Dr. Malak has been on the California Psychiatric Association Council since residency and served on various committees including the Government Affairs Committee and is currently the CPA Political Action Committee Chair. With the American Psychiatric Association (APA), he has been a representative to the National Assembly for several years, representing Residents and Fellows and now Early Career Psychiatrists. In addition to work with the APA, He is a board member of the American Association of Community Psychiatrists and a member of the American Medical Association, California Medical Association, and the San Diego County Medical Association.

Alexandra Sietsma PMHNP-BC, APRN

Nurse Practitioner Clinical Training Program Director

Ms. Sietsma is the Director of the Nurse Practitioner Clinical Training Program at the University of California, San Diego (UCSD). She is an advanced practice registered nurse and board-certified psychiatric-mental health nurse practitioner, who specializes in assessing and treating adults with varied psychiatric disorders. Currently she is on the Advanced Practice council at UCSD as well as clinical faculty at the University of San Diego. After receiving her Bachelor of Science in Nursing from Duquesne University in Pittsburgh, her places of employment included behavioral care at Scripps Mercy Hospital in San Diego and UPMC Western Psychiatric Institute and Clinic in Pittsburgh. While achieving her Master of Science as a Nurse Practitioner, in Psychiatric Mental Health from the University of San Diego and prior to joining UC San Diego Health as staff, Ms. Sietsma was a member of the first graduating class of the Clinical Training Program at UCSD. As a member of the Advisory Panel of the Education Council in the American Psychiatric Nurses Association, where she recently presented at its annual conference, Ms. Sietsma highlights the need for interprofessional collaboration between psychiatric mental health disciplines. Additionally, she has presented and will present at this years’ annual meeting of the American Psychiatric Association with the aim of improving communication in the clinical setting as well as educating future and present nurse practitioners in mental health care. Other professional organizations in which she is a member, include; the American Association of Nurse Practitioners and the National Organization of Nurse Practitioner Faculties.

Associated UCSD Leadership

Robert M. Anthenelli, MD
Interim Chair, Department of Psychiatry
University of California, San Diego

Kristin Cadenhead, MD
Associate Director, Department of Psychiatry Residency Training
University of California, San Diego

Desiree Shapiro, MD
Assistant Clinical Professor of Psychiatry
University of California, San Diego