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

John Carlin Tiedemann, LMSW

Individual provider Clinical Social Worker · NPI 1639836869

John Carlin Tiedemann, LMSW is a Clinical 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.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

19 Union Sq W
New York, NY 10003-3304
Phone: (212) 627-9600
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 106643 (NY)

Record details

NPI number1639836869
Entity typeIndividual (Type 1)
GenderMale
Credentials LMSW
Sole proprietorNo
NPI enumeratedNovember 22, 2021
Last updated in NPPESNovember 22, 2021
Certification dateNovember 22, 2021

Other providers in New York