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

Mr. Kenneth S Greenwald, LCSW

Psychoanalyst in New York, NY · enumerated 2007.

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

National Provider Identifier

1740495266

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Registry record

Entity type Individual (Type 1)

Name Mr. Kenneth S Greenwald

Credential LCSW

Sex Male

Practice address New York, NY, 10023

Phone (212) 724-5510

Fax (212) 724-5510

Enumeration date May 10, 2007

Last updated in NPPES Oct 20, 2009

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

Taxonomy & licenses

102L00000X Psychoanalyst Behavioral Health & Social Service Providers · License R071074-1 (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
R071074-1	Other	NY	NEW YORK STATE

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

What specialty is Kenneth Greenwald?

Kenneth Greenwald is registered in NPPES with the primary taxonomy of Psychoanalyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-20.