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

Abby Muehlstein, LCSW

Individual provider Social Worker · NPI 1104701721

Abby Muehlstein, LCSW is a Social Worker in Boston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2025.

Licensed in
MA
In the registry since
2025
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

300 Longwood Ave
Boston, MA 02115-5724
Phone: (617) 355-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence LCSW2120188 (MA)

Record details

NPI number1104701721
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedAugust 11, 2025
Last updated in NPPESAugust 11, 2025
Certification dateAugust 11, 2025
Mailing address300 Longwood Ave, Boston, MA 02115-5724

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