Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John B Marshall, MD

Individual provider Gastroenterology Physician · NPI 1689623753

John B Marshall, MD is a Gastroenterology Physician in Columbia, Missouri. Licensed in Missouri. Registered with an NPI since 2006.

Licensed in
MO
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Partly verified

Some contact details are missing from the federal record.

One Hospital Dr
Columbia, MO 65212-0001
Phone: (573) 882-8788
Fax: (573) 882-3131
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MDR2A21 (MO)

Record details

NPI number1689623753
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 8, 2006
Last updated in NPPESAugust 10, 2012
Mailing addressPo Box 7687, Columbia, MO 65205-7687

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