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

Marilyn Jennifer Lavin, LCSW, CASAC

Clinical Social Worker in Seaford, NY · enumerated 2006.

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

National Provider Identifier

1578585642

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Registry record

Entity type Individual (Type 1)

Name Marilyn Jennifer Lavin

Credential LCSW, CASAC

Sex Female

Practice address Seaford, NY, 11783

Phone (516) 897-8918

Enumeration date Jul 24, 2006

Last updated in NPPES Nov 6, 2008

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 5809 (NY) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License R041980 (NY) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
NE0041	Other	NY	MEDICARE

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 is the NPI number for Marilyn Lavin?

The National Provider Identifier (NPI) for Marilyn Lavin is 1578585642, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marilyn Lavin practice?

The practice location on file with NPPES is in Seaford, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Karyn Holding Clinical Social Worker · Seaford, NY NPI 1053459388 Shannon Mcguinness Social Worker · Seaford, NY NPI 1619515202

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-06.