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

Mark Klein, MD

Individual provider Specialist · NPI 1194776419

Mark Klein, MD is a Specialist in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2006.

Licensed in
DC
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 Address checks out

2141 K St NW Ste 900
Washington, DC 20037-1810
Phone: (202) 223-9722
Fax: (703) 280-5098
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence MD11986 (DC)

Record details

NPI number1194776419
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 12, 2006
Last updated in NPPESJanuary 16, 2008

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