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

Individual provider Clinical Social Worker · NPI 1033410899

Mark H Nienaber, LCSW is a Clinical Social Worker in Baton Rouge, Louisiana. Qualified in 2000, 26 years ago. Practices with Capital Area Human Services District, a 30-clinician group and accepts Medicare assignment. Licensed in Louisiana.

Years since qualifying
26
Licensed in
LA
In the registry since
2010
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

4615 Government St Bldg 2
Baton Rouge, LA 70806-5820
Phone: (225) 925-1906
Fax: (225) 362-5356
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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 5341 (LA)

Record details

NPI number1033410899
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedNovember 10, 2010
Last updated in NPPESJune 6, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Capital Area Human Services District — 30 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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