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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (3)

The overall average patient rating of Dr. Hak Ko is Poor. Dr. Ko has been reviewed by 6 patients who have provided 3 comments. The rating is 1 out of 5 stars.

Patient Ratings
Ease of Appointment 2.0
Promptness 1.7
Courteous Staff 1.8
Accurate Diagnosis 1.8
Bedside Manner 1.0
Spends Time with Me 1.0
Follows Up After Visit 1.0

Specialties & Research

Dr. Hak Ko, MD is board certified in Psychiatry.

  • He has special expertise in 7 areas:
  • Attention Deficit Disorder (ADD) / Attention Deficit Hyperactivity Disorder (ADHD)
  • Bipolar Disorder / Manic Depressive Disorder
  • Depression
  • Depressive Disorder
  • Insomnia
  • Schizophrenia
  • Sleep Disorders

Education & Awards

Dr. Ko graduated from Seoul National University.


Dr. Ko has 8 hospital affiliations:

  • Catholic Health System - Mercy Hospital of Buffalo 
  • Kaleida Health - Buffalo General Hospital 


  • Korean

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Additional Information
Dr. Hak J Ko MD is a male Psychiatrist, has 39 years of experience and practices in Psychiatry.
Where does Dr. Hak J. Ko practice?
Dr. Hak Ko has 3 office locations.
Dr. Hak Ko practices Psychiatry near Buffalo, NY.
Additional practice locations include: North Tonawanda, NY.
See Buffalo Psychiatrists.