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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. Elmer Chang:

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  1. Qualifications
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Specialties & Research

Dr. Elmer Chang, MD, PHD is board certified in Internal Medicine.

  • He has special expertise in 3 areas:
  • Colon Cancer
  • Inflammatory Bowel Diseases (IBD)
  • Peptic Ulcer

Education & Awards

Dr. Chang graduated from Northwestern University, Chicago.


Affiliations

Dr. Chang has 1 hospital affiliations:

  • Mission Hospital 

Languages

  • Chinese
  • Mandarin
  • Taiwanese

> > > > Dr. Elmer Chang, MD, PHD

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Additional Information
Dr. Elmer Y Chang MD and PHD is a male Internist, has 15 years of experience and practices in Internal Medicine.
Where does Dr. Elmer Y. Chang practice?
Dr. Elmer Chang has 2 office locations.
Dr. Elmer Chang practices Internal Medicine near Hayward, CA.
Additional practice locations include: Mission Viejo, CA.
See Hayward Internists.