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

MS. Mary Kathryn Mastalerz, MSW

Individual provider Clinical Social Worker · NPI 1487914594

MS. Mary Kathryn Mastalerz, MSW is a Clinical Social Worker in Springfield, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2012.

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

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Practice location Address checks out

367 Pine St
Springfield, MA 01105-1930
Phone: (413) 755-2600
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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 (MA)

Record details

NPI number1487914594
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSW
Sole proprietorNo
NPI enumeratedMay 22, 2012
Last updated in NPPESMay 22, 2012

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