Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Lou Lindenbaum, PHD

Intellectual & Developmental Disabilities Psychologist in Brewster, NY · enumerated 2016.

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

National Provider Identifier

1891152799

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Registry record

Entity type Individual (Type 1)

Name Lou Lindenbaum

Credential PHD

Sex Male

Practice address 31 International Blvd, Brewster, NY, 10509

Phone (845) 278-7272

Fax (845) 278-6781

Enumeration date Jan 22, 2016

Last updated in NPPES Jan 22, 2016

Taxonomy & licenses

103TM1800X Intellectual & Developmental Disabilities Psychologist Behavioral Health & Social Service Providers · License 001491-1 (NY) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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 1891152799 active?

Yes, as of the latest NPPES snapshot, NPI 1891152799 is active (record last updated 2016-01-22).

How do I verify Lou Lindenbaum's NPI record?

Cross-check NPI 1891152799 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Natalie Cavalieri Psychologist · Brewster, NY NPI 1720432362

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-22.