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. David Chang:
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Specialties & Research
Dr. David Chang, MD, PHD is board certified in Addiction Psychiatry and Psychiatry.
- He has special expertise in 3 areas:
- Gastrointestinal Cancer
- Hepatocellular Carcinoma
- Immune System Disorders
Education & Awards
Dr. Chang graduated from Dartmouth College, Hanover. He has 1 awards.
Dr. Chang has 10 hospital affiliations:
- Sentara Careplex Hospital
- Bon Secours Maryview Medical Center
Accepted Insurance Plans
Dr. Chang accepts these health insurances in at least one office:
- Sentara Health Plans - 1 plan
- Anthem - 2 plans
- Unicare - 2 plans
- Cigna - 2 plans
- Aetna - 2 plans