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John Han-Chih Chang, MD

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Phone Number : 630-821-6400

Education / Awards


Undergraduate University of Michigan Ann Arbor, Michigan
Medical degree University of Michigan Medical School Ann Arbor, Michigan
Internship St. Joseph Medical Center Ann Arbor, Michigan
Residency Hospital of the University of Pennsylvania Philadelpia, Pennsylvania


Radiation Oncology (American Board of Radiology)


Chief Resident in Radiation Oncology (1999 – 2000)
Assistant Editor in Oncolink – cancer website (1997 – 2000)

About me

Dr. Chang is the Director of Clinical Research of and primarily practices at the Northwestern Medicine Chicago Proton Center. He is Board Certified in Radiation Oncology. After completing his medical school at the University of Michigan and residency at the University of Pennsylvania, he joined Radiation Oncology Consultants, where he has been in private practice since 2000. Dr. Chang is the principal investigator for the Radiation Therapy Oncology Group (RTOG) and the Children’s Oncology Group (COG) research program, and is an assistant professor at the Chicago Medical School/Rosalind Franklin School of Medicine and Science.  He is a peer review editor for the International Journal of Radiation Oncology, Physics and Biology.

Dr. Chang has expertise in the use of conformal 3-D radiation therapy, intensity modulated radiation therapy (IMRT), stereotactic radiosurgery, high dose rate brachytherapy, and permanent brachytherapy (seed implants) and Proton therapy. He is knowledgeable in breast, head and neck, gastrointestinal, genitourinary, brain, lung, and pediatric malignancies. He has presented numerous papers, and given lectures on various cancer treatments.  He spends his leisure time playing hockey and baseball with his two sons, and softball with his wife.  He also derives great enjoyment from training his South African Mastiff to become a pet therapy dog.

When asked why he chose Radiation Oncology, he states, “Although I thoroughly enjoyed research and the technological aspect of medicine early in my career, I longed for patient contact. Radiation Oncology gives me the perfect setting to use my expertise in technology to help my patients fight their disease with the most advanced therapies possible.”

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