Browse Health
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:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

View full profile

Patient Reviews

Have you visited Dr. Chang? Share your experience.
Write a Review

Specialties & Research

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

Education & Awards

Dr. Chang graduated from Northwestern University, Chicago.


Dr. Chang has 3 hospital affiliations:

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


  • Spanish
  • Korean

> > > > Dr. Roger Chang, MD

Similar doctors nearby

Dr. Reza Mina-Araghi

Internal Medicine
14 years experience
Orange, CA

Dr. Amir Ghiassi

Internal Medicine
13 years experience
Orange, CA

Dr. Melvyn Sterling

Internal Medicine
36 years experience
Orange, CA

Dr. Kasra Morshedizadeh

Internal Medicine
10 years experience
Orange, CA

Dr. Carole Sofio

Internal Medicine
27 years experience
Orange, CA

Dr. Quincy Almond

Internal Medicine
8 years experience
Orange, CA
Search All Similar Doctors
Additional Information
Dr. Roger S Chang MD is a male Internist, has 10 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.