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

Individual provider Clinical Social Worker · NPI 1588368435

Mark George De Guzman, LMSW is a Clinical Social Worker in Brooklyn, New York. Licensed in New York. Registered with an NPI since 2023.

Licensed in
NY
In the registry since
2023
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

348 13th St Ste 203
Brooklyn, NY 11215-6179
Phone: (718) 788-5101
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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 · Licence 117433 (NY)

Record details

NPI number1588368435
Entity typeIndividual (Type 1)
GenderMale
Credentials LMSW
Sole proprietorNo
NPI enumeratedMarch 27, 2023
Last updated in NPPESMarch 27, 2023
Certification dateMarch 27, 2023

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