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

Mr. John L. O'Neill, MSW, LICSW

Individual provider Clinical Social Worker · NPI 1336421395

Mr. John L. O'Neill, MSW, LICSW is a Clinical Social Worker in West Springfield, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2011
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

103 Myron St Ste A
West Springfield, MA 01089
Phone: (413) 592-1980
Fax: (413) 439-0100
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 119129 (MA)

Record details

NPI number1336421395
Entity typeIndividual (Type 1)
GenderMale
Credentials MSW , LICSW
Sole proprietorYes
NPI enumeratedSeptember 15, 2011
Last updated in NPPESMarch 1, 2018

Other providers in West Springfield