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Dr. John Marshall, MD is a Doctor primarily located in Columbia, MO. He has 40 years of experience. His specialties include Gastroenterology and Internal Medicine. He speaks English.
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Specialties & Expertise
Dr. John Marshall has the following 10 areas of expertise and 2 specialties.
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Type 2 Diabetes
Type 2 diabetes is a chronic disease in which your body is unable to maintain a normal blood sugar (glucose) level.
Locations & Directions
Dr. John Marshall, MD is similar to these 3 Doctors near Columbia, MO.
Dr. Laura Henderson Kelley
Dr. Edward Partyka
Dr. James Koller