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

Dr. Ann Marian Cowgill, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1942417928

Dr. Ann Marian Cowgill, MD is an Endocrinology, Diabetes & Metabolism Physician in Washington, District of Columbia. Practices as a sole proprietor. Licensed in Maryland.

Licensed in
MD
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

50 Irving St NW
Washington, DC 20422-0001
Phone: (202) 745-8173
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence D0055750 (MD)

Record details

NPI number1942417928
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 17, 2007
Last updated in NPPESJuly 8, 2007

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