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

Justin John Lak, LICSW

Individual provider Clinical Social Worker · NPI 1114413556

Justin John Lak, LICSW is a Clinical Social Worker in Northampton, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2018
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

1 Prince St
Northampton, MA 01060-3600
Phone: (413) 585-8071
Fax: (413) 586-6776
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 119943 (MA)

Record details

NPI number1114413556
Entity typeIndividual (Type 1)
GenderMale
Credentials LICSW
Sole proprietorYes
NPI enumeratedJuly 9, 2018
Last updated in NPPESJuly 9, 2018

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