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

MS. Martha E. Irwin, LICSW

Individual provider Clinical Social Worker · NPI 1699857276

MS. Martha E. Irwin, LICSW is a Clinical Social Worker in Somerville, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2006
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

26 Oxford St
Somerville, MA 02143-1608
Phone: (617) 628-7255
Fax: (617) 628-2779
Show map & directions

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 100240 (MA)

Record details

NPI number1699857276
Entity typeIndividual (Type 1)
GenderFemale
Credentials LICSW
Sole proprietorYes
NPI enumeratedOctober 20, 2006
Last updated in NPPESFebruary 26, 2010

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