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).
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The overall average patient rating of Dr. John Chang is Excellent.
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Eating Disorders Patient Education Read all about treatments and doctors to see for various eating disorders by reading our Vitals patient education guides.Before Visiting Dr. Chang Learn More
Education & Awards
Dr. Chang graduated from University of New England, Biddeford. He has 2 awards.
Dr. Chang has 4 hospital affiliations:
- Caritas Holy Family Hospital & Medical Center
- Lawrence General Hospital
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- Additional Information
- Dr. John Vincent Chang DO and MD is a male Family Practitioner, has 28 years of experience and practices in Family Medicine.
- Where does Dr. John V. Chang practice?
- Dr. John Chang has 1 office location.
Dr. John Chang practices Family Medicine near Lawrence, MA.
See Lawrence Primary Care Doctors.