Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Leslie Bromberg, LCSW-R

Clinical Social Worker in Bellport, NY · enumerated 2008.

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

National Provider Identifier

1770734493

Verified

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Registry record

Entity type Individual (Type 1)

Name Ms. Leslie Bromberg

Credential LCSW-R

Sex Female

Practice address Bellport, NY, 11713

Phone (631) 835-9594

Enumeration date Oct 1, 2008

Last updated in NPPES Nov 17, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 079294 (NY) Primary

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

Is NPI 1770734493 active?

Yes, as of the latest NPPES snapshot, NPI 1770734493 is active (record last updated 2015-11-17).

How do I verify Leslie Bromberg's NPI record?

Cross-check NPI 1770734493 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-11-17.