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

Olivia Samantha Harpster, LCSW

Individual provider Clinical Social Worker · NPI 1851746721

Olivia Samantha Harpster, LCSW is a Clinical Social Worker in Washington, District of Columbia. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2016
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

440 12th St NE Apt 210
Washington, DC 20002-6386
Phone: (847) 687-7114
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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 149017137 (IL)

Record details

NPI number1851746721
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedApril 28, 2016
Last updated in NPPESFebruary 6, 2026
Certification dateFebruary 6, 2026

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