NPI Portal NPI Lookup & Verification

Iris Greenbaum, LCSW

Iris Greenbaum is a Clinical Social Worker provider (Social Worker) practicing in Griffith, IN, registered in the NPPES registry with NPI 1508843863 since 2005. The credential LCSW stands for Licensed Clinical Social Worker.

✓ Active NPI ✓ Valid NPI checksum

NPI 1508843863
Entity type Individual (Type 1)
Name Iris Greenbaum
Credential LCSW
Sex Female
Practice address 223 N BROAD ST, Griffith, IN, 46319
Phone 2199341900
Fax 2199341900
Enumeration date 2005-12-28
Last updated in NPPES 2007-07-08

Taxonomy & licenses

Taxonomy code Specialty Primary License State
1041C0700X Clinical Social Worker Primary 34004787A IN

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

Copy-ready billing details
Provider: Iris Greenbaum, LCSW
NPI: 1508843863
Taxonomy: 1041C0700X (Clinical Social Worker)
Address: 223 N BROAD ST, Griffith, IN, 46319

Verify this record

Cross-check NPI 1508843863 against the authoritative CMS record: view Iris Greenbaum on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

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.
What specialty is Iris Greenbaum?
Iris Greenbaum is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.