Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ellen T. Lacko,Msw,Lcsw,LLC

Q: What type of organization is Ellen T. Lacko,Msw,Lcsw,LLC?

Ellen T. Lacko,Msw,Lcsw,LLC is registered in NPPES as a Clinical Social Worker (its primary provider taxonomy).

Clinical Social Worker in Newtown, CT · enumerated 2014 · authorized official Ellen Lacko, Social Worker.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1396151379

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Registry record

Entity type Organization (Type 2)

Legal business name Ellen T. Lacko,Msw,Lcsw,LLC

Practice address 8 W Farm Ridge Rd, Newtown, CT, 06470

Phone (203) 733-0136

Enumeration date Jul 10, 2014

Last updated in NPPES Jul 10, 2014

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 003021 (CT) Primary

Authorized official

Name Ellen Lacko

Title Social Worker

Phone (203) 733-5529

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Ellen T. Lacko,Msw,Lcsw,LLC?

Ellen T. Lacko,Msw,Lcsw,LLC is registered in NPPES as a Clinical Social Worker (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-07-10.