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

Mr. William Anthony Mathis, LCSW, CADC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1639408990

Mr. William Anthony Mathis, LCSW, CADC is an Addiction (Substance Use Disorder) Counselor in Clarksville, Indiana. Practices as a sole proprietor and works from 2 locations. Licensed in Indiana and Kentucky.

Licensed in
IN, KY
In the registry since
2009
Specialties on file
3
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.
CADC — Certified Alcohol and Drug Counselor
A certified addiction counsellor.

See every abbreviation used in this directory →

Practice location Address checks out

517 Little League Blvd
Clarksville, IN 47129-6629
Phone: (888) 948-6789
Fax: (877) 345-3501
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3907 Elgin Way, Louisville, KY 40216-4908 — (502) 778-2006

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 3320 (KY)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 1048 (KY)
Clinical Social Worker Taxonomy 1041C0700X · Licence 34005676A (IN)

Record details

NPI number1639408990
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW , CADC
Sole proprietorYes
NPI enumeratedDecember 16, 2009
Last updated in NPPESOctober 29, 2018

Other providers in Clarksville