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

MS. Joan Marx Bernthal, LCSW

Individual provider Clinical Social Worker · NPI 1720299548

MS. Joan Marx Bernthal, LCSW is a Clinical Social Worker in Washington, District of Columbia. Practices as a sole proprietor. Licensed in District of Columbia.

Licensed in
DC
In the registry since
2007
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

5217 Wisconsin Ave NW #207
Washington, DC 20015-2075
Phone: (202) 244-6565
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence LC300265 (DC)

Record details

NPI number1720299548
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedMay 24, 2007
Last updated in NPPESJuly 8, 2007

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