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.
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Education & Awards
Dr. Chang graduated from Northwestern University, Chicago.More Education & Awards
Dr. Chang has 3 hospital affiliations:
- Anaheim Memorial Medical Center
- St. Joseph Hospital - Orange
- Western Medical Center
Accepted Insurance Plans
Dr. Chang accepts these health insurances in at least one office:
- Great-West Healthcare - 3 plans
- Anthem Blue Cross - 6 plans
- Blue Shield of California - 78 plans
- Cigna - 4 plans
- Aetna - 1 plan
More Accepted Insurance