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 provides Clinical Social Worker services 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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