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

Ethan Diamond, MD

Individual provider Internal Medicine Physician · NPI 1639873102

Ethan Diamond, MD is an Internal Medicine Physician in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2023.

Licensed in
DC
In the registry since
2023
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

3800 Reservoir Rd NW Dept OF
Washington, DC 20007-2113
Phone: (202) 444-8168
Fax: (877) 303-1460
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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 MD600006067 (DC)

Record details

NPI number1639873102
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 29, 2023
Last updated in NPPESAugust 6, 2026
Certification dateAugust 6, 2026

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