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

Mark Keller, LICSW

Individual provider Counselor · NPI 1881986966

Mark Keller, LICSW is a Counselor in Pittsfield, Massachusetts. Practices as a sole proprietor. Registered with an NPI since 2011.

In the registry since
2011
What do these letters mean?
LICSW — Licensed Independent Clinical Social Worker
The title some states use for an independently practising clinical social worker.

See every abbreviation used in this directory →

Practice location Address checks out

359 Fenn St Administrative Offices
Pittsfield, MA 01201-5261
Phone: (413) 629-1262
Fax: (413) 448-2198
Show map & directions

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

Specialties & licences

Counselor (primary) Taxonomy 101Y00000X

Record details

NPI number1881986966
Entity typeIndividual (Type 1)
GenderMale
Credentials LICSW
Sole proprietorYes
NPI enumeratedMay 9, 2011
Last updated in NPPESMay 9, 2011
Mailing address359 Fenn St, Administrative Offices, Pittsfield, MA 01201-5261

Other providers in Pittsfield