Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mr. Nathan A Oatis, MSW, LCSW

Individual provider Clinical Social Worker · NPI 1295505667

Mr. Nathan A Oatis, 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
2024
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

3109 S Grand Blvd Ste 200C
Saint Louis, MO 63118-1039
Phone: (314) 691-0903
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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 2021049186 (MO)

Record details

NPI number1295505667
Entity typeIndividual (Type 1)
GenderMale
Credentials MSW , LCSW
Sole proprietorYes
NPI enumeratedJanuary 5, 2024
Last updated in NPPESDecember 22, 2025
Certification dateDecember 22, 2025

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