Skip to main content

Dr. Chang is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
  • Connect with colleagues in the same hospital or clinic.
  • Read the latest clinical news, personalized to your specialty.

See Dr. Chang's full profile

Already have an account?

  • Office

    1434 Stanley Dollar Dr
    Apt 3B
    Walnut Creek, CA 94595
    Phone+1 716-418-4665
    Fax+1 925-954-8696

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