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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. Roger Chang:

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Specialties & Research

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


Education & Awards

Dr. Chang graduated from Northwestern University, Chicago.


Affiliations

Dr. Chang has 3 hospital affiliations:

  • St. Joseph Hospital - Orange 
  • Anaheim Memorial Medical Center 
  • Western Medical Center 

Languages

  • Spanish
  • Korean

> > > > Dr. Roger Chang, MD

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Additional Information
Dr. Roger S Chang MD is a male Internist, has 11 years of experience and practices in Internal Medicine.
Where does Dr. Roger S. Chang practice?
Dr. Roger Chang has 1 office location.
Dr. Roger Chang practices Internal Medicine near Orange, CA.
See Orange Internists.