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. Thomas Chang:
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Education & Awards
Dr. Chang graduated from Institute Of Medicine I, Yangon.
Dr. Chang has 7 hospital affiliations:
- John Muir Medical Center, Walnut Creek Campus
- Emanuel Medical Center