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

John Haefner, LMSW

Individual provider Social Worker · NPI 1306515960

John Haefner, LMSW is a Social Worker in New York, New York. Licensed in New York. Registered with an NPI since 2021.

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.

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Practice location Address checks out

2369 2nd Ave
New York, NY 10035-3108
Phone: (212) 876-2300
Fax: (212) 369-8209
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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 112253-01 (NY)

Record details

NPI number1306515960
Entity typeIndividual (Type 1)
GenderMale
Credentials LMSW
Sole proprietorNo
NPI enumeratedSeptember 8, 2021
Last updated in NPPESSeptember 8, 2021
Certification dateSeptember 8, 2021

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