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

Individual provider Clinical Social Worker · NPI 1255861860

David William Mahnken, LCSW is a Clinical Social Worker in Burlington, Massachusetts. Practices as a sole proprietor. Registered with an NPI since 2017.

In the registry since
2017
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

11A Cypress Dr
Burlington, MA 01803
Phone: (781) 608-9949
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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 number1255861860
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedJune 15, 2017
Last updated in NPPESJune 28, 2022
Certification dateJune 28, 2022
Mailing address242 Green St, Gardner, MA 01440-1336

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