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

Individual provider Social Worker · NPI 1376821868

Gretchen Winterkorn, LMSW is a Social Worker in New York, New York. Licensed in New York. Registered with an NPI since 2011.

Licensed in
NY
In the registry since
2011
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

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Practice location Address checks out

121 W 20th St
New York, NY 10011-3641 Not confirmed with CMS for 13 years — call before visiting
Phone: (212) 337-9277
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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 080258 (NY)

Record details

NPI number1376821868
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMSW
Sole proprietorNo
NPI enumeratedAugust 1, 2011
Last updated in NPPESApril 12, 2013

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