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

Mr. Mark Horwitz, LCSWCADC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1801985759

Mr. Mark Horwitz, LCSWCADC is an Addiction (Substance Use Disorder) Counselor in Princeton, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2006
Specialties on file
2

Practice location Address checks out

1405 N Main St
Princeton, IL 61356-9771
Phone: (815) 872-2100
Fax: (815) 872-5079
Show map & directions

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X (IL)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 16864 (IL)

Record details

NPI number1801985759
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSWCADC
Sole proprietorYes
NPI enumeratedOctober 11, 2006
Last updated in NPPESNovember 29, 2007

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