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This profile was last updated on 1/22/13  and contains information from public web pages.

Employment History

Board Memberships and Affiliations

  • Member
    American Psychiatric Association


  • M.D.
  • Doctor of Medicine degree
    Seoul National University School of Medicine
Web References
Hak J. Ko, M.D., 24 Aug 2007 [cached]
Hak J. Ko, M.D.
Medical Director
"Our goal as mental health specialists is to improve the consumer's quality of life and to facilitate his or her reintegration into society, family and the workplace."
Hak J. Ko, M.D.Dr. Ko came to Horizon in 1989 from Buffalo General Hospital, where he was the medical director for the adult outpatient clinic of the Community Health Center.
He also currently serves as the medical director for CAIN Psychiatric Inpatient Units and has served as psychiatric consultant for Erie County Forensic Service; CSS Corporation Six; Mid-Erie Mental Health Corporation and the Erie County Home and Infirmary.
A native of Korea, Dr. Ko received his Doctor of Medicine degree from Seoul National University School of Medicine in Seoul, South Korea.He completed his psychiatry residency (serving as chief resident at Erie County Medical Center) through SUNY at Buffalo Department of Psychiatry in 1980.
Dr. Ko is certified by the American Board of Psychiatry and Neurology and is a certified New York State Buprenorphine specialist.He is a member of the American Psychiatric Association, and serves as assistant clinical professor in SUNY at Buffalo's Department of Psychiatry.He is also an attending psychiatrist at Buffalo General Hospital and Erie County Medical Center.
Horizon Health Services Executive Management Team, 24 Aug 2007 [cached]
Hak J. Ko, M.D., Medical Director
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