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

Siobhan Clark, LMSW

Individual provider Social Worker · NPI 1912395450

Siobhan Clark, LMSW is a Social Worker in New York, New York. Licensed in New York. Registered with an NPI since 2015.

Licensed in
NY
In the registry since
2015
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

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Practice location Address checks out

50 Broadway
New York, NY 10004-1607
Phone: (212) 254-0333
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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 092970 (NY)

Record details

NPI number1912395450
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMSW
Sole proprietorNo
NPI enumeratedJanuary 7, 2015
Last updated in NPPESJanuary 7, 2015

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