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

Marshall Walton Waller, MD

Individual provider Internal Medicine Physician · NPI 1093394157

Marshall Walton Waller, MD is an Internal Medicine Physician in Washington, District of Columbia. Practices as a sole proprietor. Licensed in District of Columbia.

Licensed in
DC
In the registry since
2021
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

50 Irving St NW
Washington, DC 20422-0001
Phone: (202) 745-8000
Fax: (202) 745-2212
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD600001638 (DC)

Record details

NPI number1093394157
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 6, 2021
Last updated in NPPESMarch 3, 2025
Certification dateMarch 3, 2025

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