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

Mr. Mark Lewis Viator, LCSW

Individual provider Clinical Social Worker · NPI 1679691174

Mr. Mark Lewis Viator, LCSW is a Clinical Social Worker in Austin, Texas. Practices as a sole proprietor. Licensed in Texas.

Licensed in
TX
In the registry since
2007
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

3215 Steck Ave Ste 100
Austin, TX 78757-7566
Phone: (512) 452-2929
Fax: (512) 452-5656
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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 30524 (TX)

Record details

NPI number1679691174
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedMarch 26, 2007
Last updated in NPPESJuly 8, 2007

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