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. Allen Chang:
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- Currently 4 of 4 stars
The overall average patient rating of Dr. Allen Chang is Excellent.
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Education & Awards
Dr. Chang graduated from University of Massachusetts, Worcester.
Dr. Chang has 5 hospital affiliations:
- U Mass Memorial Med Ctr - Memorial Campus
- Clinton Hospital
Accepted Insurance Plans
Dr. Chang accepts these health insurances in at least one office:
- Aetna - 3 plans
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- Additional Information
- Where does Dr. Allen Chang practice?
Dr. Allen Chang practices Internal Medicine near Worcester, MA.
See Worcester Internists.