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

Dr. Mary Barker Barton, MD, MPP

Individual provider Internal Medicine Physician · NPI 1225971526

Dr. Mary Barker Barton, MD, MPP is an Internal Medicine Physician in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2026.

Licensed in
DC
In the registry since
2026
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

2333 Ontario Rd NW
Washington, DC 20009-2627
Phone: (844) 796-2797
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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 MD500003440 (DC)

Record details

NPI number1225971526
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , MPP
Sole proprietorNo
NPI enumeratedApril 11, 2026
Last updated in NPPESApril 11, 2026
Certification dateApril 11, 2026

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