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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Specialties & Research
Dr. Christopher Shanahan, M.P.H., MD is board certified in Internal Medicine.
- He has special expertise in 3 areas:
- Community Medicine
- Drug Abuse (Substance-Related Addiction Disorders)
- Flu (Human Influenza)
Education & Awards
Dr. Shanahan graduated from UMDNJ, Newark.
Dr. Shanahan has 4 hospital affiliations:
- Boston Medical Center
- Wellesley Hospital