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Dr. Chang is on Doximity

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Education & Training

  • University at Buffalo (Catholic Health System--Sisters of Charity)
    University at Buffalo (Catholic Health System--Sisters of Charity)Residency, Internal Medicine, 1974 - 1976
  • Mount St. Mary's Hospital and Health Center
    Mount St. Mary's Hospital and Health CenterInternship, Internal Medicine, 1972 - 1973
  • Seoul National University College of Medicine
    Seoul National University College of MedicineClass of 1966

Certifications & Licensure

  • CA State Medical License
    CA State Medical License 2015 - 2025
  • NY State Medical License
    NY State Medical License 1975 - 2017
  • American Board of Internal Medicine Internal Medicine

Hospital Affiliations