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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).

Learn more about Dr. Don Chang:

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Specialties & Research

Dr. Don Chang, MD is board certified in Internal Medicine.

Education & Awards

Dr. Chang graduated from Oregon Health & Science University, Portland.


Dr. Chang has 1 hospital affiliations:

  • Fresno Medical Center 

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Additional Information
Dr. Don Nicholaus Chang MD is a male Internist, has 4 years of experience and practices in Internal Medicine.
Where does Dr. Don N. Chang practice?
Dr. Don Chang has 1 office location.
Dr. Don Chang practices Internal Medicine near Orange, CA.
See Orange Internists.