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

Mark Zimmermann, LCSW, PLLC

Organization Clinical Social Worker · NPI 1386005213

Mark Zimmermann, LCSW, PLLC is a Clinical Social Worker in Bethesda, Maryland. Licensed in New York. Registered with an NPI since 2016.

Licensed in
NY
In the registry since
2016
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

4710 Elm St Apt W1304
Bethesda, MD 20814-3828
Phone: (917) 830-3463
Fax: (347) 715-7750
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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 081845 (NY)

Record details

NPI number1386005213
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Zimmermann — Owner · (917) 830-3463
Other names Mark Zimmermann
NPI enumeratedMarch 20, 2016
Last updated in NPPESNovember 15, 2024
Certification dateNovember 15, 2024
Mailing address4710 Elm St Apt W1304, Bethesda, MD 20814-3828

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