Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mr. Thomas L Irwin Jr., MSW, LCSW

Individual provider Clinical Social Worker · NPI 1538353230

Mr. Thomas L Irwin Jr., MSW, LCSW is a Clinical Social Worker in Saint Louis, Missouri. Practices as a sole proprietor. Licensed in Missouri.

Licensed in
MO
In the registry since
2007
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.
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

462 N Taylor Ave
Saint Louis, MO 63108-1831
Phone: (314) 531-8879
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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 SW000194 (MO)

Record details

NPI number1538353230
Entity typeIndividual (Type 1)
GenderMale
Credentials MSW , LCSW
Sole proprietorYes
NPI enumeratedSeptember 5, 2007
Last updated in NPPESOctober 26, 2010

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