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

Mrs. Jennifer Lynn Sell-Knapp, MSW

Individual provider Clinical Social Worker · NPI 1811252174

Mrs. Jennifer Lynn Sell-Knapp, MSW is a Clinical Social Worker in Greenfield, Massachusetts. Registered with an NPI since 2012.

In the registry since
2012
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.

See every abbreviation used in this directory →

Practice location Address checks out

111 Federal St
Greenfield, MA 01301-2501
Phone: (413) 737-9544
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X

Record details

NPI number1811252174
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSW
Sole proprietorNo
NPI enumeratedJuly 11, 2012
Last updated in NPPESJuly 11, 2012

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