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

Marcia Anne Friedlander, LCSW

Psychoanalyst in Roslyn, NY · enumerated 2008.

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

National Provider Identifier

1740433523

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Registry record

Entity type Individual (Type 1)

Name Marcia Anne Friedlander

Credential LCSW

Sex Female

Practice address Roslyn, NY, 11576

Phone (917) 379-0946

Enumeration date Oct 24, 2008

Last updated in NPPES Oct 24, 2008

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License R031690-1 (NY) Secondary

102L00000X Psychoanalyst Behavioral Health & Social Service Providers · License R031690-1 (NY) Primary

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

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.

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Frequently asked questions

Is NPI 1740433523 active?

Yes, as of the latest NPPES snapshot, NPI 1740433523 is active (record last updated 2008-10-24).

How do I verify Marcia Friedlander's NPI record?

Cross-check NPI 1740433523 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Dina Hirsch Clinical Psychologist · Roslyn, NY NPI 1447314646

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-24.