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

Mr. Mark Led Grebener, LCSWLAC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1558462481

Mr. Mark Led Grebener, LCSWLAC is an Addiction (Substance Use Disorder) Counselor in Littleton, Colorado. Licensed in Colorado and Illinois. Registered with an NPI since 2006.

Licensed in
CO, IL
In the registry since
2006
Specialties on file
3

Practice location Address checks out

5574 S Prince St #11
Littleton, CO 80120
Phone: (303) 883-4808
Fax: (303) 794-6736
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 LAC 127 (CO)
Clinical Social Worker Taxonomy 1041C0700X · Licence CSW 434 (CO)

Record details

NPI number1558462481
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSWLAC
Sole proprietorNo
NPI enumeratedSeptember 25, 2006
Last updated in NPPESSeptember 11, 2025

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