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

Seth Greenblatt LLC

Organization Clinical Social Worker · NPI 1407653926

Seth Greenblatt LLC provides Clinical Social Worker services in Washington, District of Columbia. Registered with an NPI since 2025.

In the registry since
2025
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1615 L St NW Ste 340
Washington, DC 20036-5617
Phone: (703) 963-2019
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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

Record details

NPI number1407653926
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Seth Greenblatt — Owner · (703) 963-2019
NPI enumeratedMarch 3, 2025
Last updated in NPPESFebruary 4, 2026
Certification dateFebruary 4, 2026
Mailing address4689 Hazleton Ln, Lake Worth, FL 33449-8635

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