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SETH GREENBLATT LLC
NPI 1407653926
Social Worker - Clinical in Washington, DC

Active since March 03, 2025
1615 L ST NW STE 340, WASHINGTON, DC 20036(703) 963-2019 Get Directions Write a Review

NPPES record last updated: February 4, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 4, 2026, Mar 3, 2025 (2 updates tracked since 2025).

About Seth Greenblatt Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SETH GREENBLATT LLC (NPI 1407653926) is a healthcare organization registered as a clinical in Washington, District Of Columbia and active in the NPI registry since March 2025. The organization lists Seth Greenblatt, Owner, as its authorized official.

NPPES Registry Identity

NPI1407653926
Entity TypeOrganization
Primary Taxonomy1041C0700X
Legal Business NameSETH GREENBLATT LLC
Location Address1615 L ST NW STE 340Washington, DC 20036-5617
Mailing Address4689 Hazleton LnLake Worth, FL 33449-8635
Phone(703) 963-2019
Organization SubpartNo
Authorized OfficialSeth GreenblattOwner · (703) 963-2019
Enumeration DateMarch 3, 2025
Last NPPES UpdateFebruary 4, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 4, 2026
✔ NPI 1407653926 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
1615 L ST NW STE 340, Washington, DC 20036
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. SETH A. GREENBLATT LCSW-C
Social Worker (Clinical)
1615 L ST NW STE 340
WASHINGTON, DC 20036
District of Columbia (703) 963-2019

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Seth Greenblatt LLC's NPI number?

The NPI number for Seth Greenblatt LLC is 1407653926. It was assigned to this organization in the NPPES registry on March 3, 2025.

Where is Seth Greenblatt LLC located?

Seth Greenblatt LLC is located at 1615 L St NW Ste 340, Washington, DC 20036. The listed phone number is (703) 963-2019.

What is Seth Greenblatt LLC's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Seth Greenblatt LLC was last updated on February 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.