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

Jason Nicholsen, LICSW

Individual provider Social Worker · NPI 1548673387

Jason Nicholsen, LICSW is a Social Worker in Washington, District of Columbia. Practices as a sole proprietor. Licensed in District of Columbia.

Licensed in
DC
In the registry since
2014
Specialties on file
2
What do these letters mean?
LICSW — Licensed Independent Clinical Social Worker
The title some states use for an independently practising clinical social worker.

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Practice location Address checks out

2301 Martin Luther King Jr Ave SE Whitman Walker Health
Washington, DC 20020-5813
Phone: (347) 834-3781
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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 LC50080958 (DC)
Social Worker Taxonomy 104100000X · Licence LG50081076 (DC)

Record details

NPI number1548673387
Entity typeIndividual (Type 1)
GenderMale
Credentials LICSW
Sole proprietorYes
NPI enumeratedJune 10, 2014
Last updated in NPPESFebruary 27, 2017

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