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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- Currently 2.5 of 4 stars
The overall average patient rating of Dr. John Marshall is Good.
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Specialties & Research
Dr. John Marshall, MD is board certified in Medical Oncology.
- He has special expertise in 5 areas:
- Biological Therapy (Immunotherapy)
- Clinical Research
- Gastrointestinal Cancer
- Hepatocellular Carcinoma
Education & Awards
Dr. Marshall graduated from University of Louisville . He has 2 awards.
Dr. Marshall has 2 hospital affiliations:
- Georgetown University Hospital
- Georgetown Univ.
Accepted Insurance Plans
Dr. Marshall accepts these health insurances in at least one office:
- United Healthcare - 19 plans
- CareFirst - 3 plans
- The Chartered Health Plan - 1 plan
- Evercare - 3 plans
- Cigna - 4 plans