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

MS. Gretchen Brinkmann, LMSW

Individual provider Social Worker · NPI 1881285062

MS. Gretchen Brinkmann, LMSW is a Social Worker in Smithtown, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2021
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

See every abbreviation used in this directory →

Practice location Address checks out

11 Route 111
Smithtown, NY 11787-3754
Phone: (631) 920-8300
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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 086359 (NY)

Record details

NPI number1881285062
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMSW
Sole proprietorYes
NPI enumeratedJanuary 29, 2021
Last updated in NPPESJanuary 29, 2021
Certification dateJanuary 14, 2021

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