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

Mr. Zachary Matthew Olsen, LSW

Individual provider Social Worker · NPI 1023749561

Mr. Zachary Matthew Olsen, LSW is a Social Worker in Lancaster, Pennsylvania. Licensed in New Jersey and Pennsylvania. Registered with an NPI since 2022.

Licensed in
NJ, PA
In the registry since
2022
Specialties on file
2
What do these letters mean?
LSW — Licensed Social Worker
A state-licensed social worker.

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Practice location Address checks out

1681 Crown Ave
Lancaster, PA 17601-6303
Phone: (717) 208-6686
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence SW142627 (PA)
Social Worker Taxonomy 104100000X · Licence 44SL07168800 (NJ)

Record details

NPI number1023749561
Entity typeIndividual (Type 1)
GenderMale
Credentials LSW
Sole proprietorNo
NPI enumeratedJune 23, 2022
Last updated in NPPESFebruary 12, 2026
Certification dateFebruary 12, 2026

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