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

Ellen S Grudowski, LISW-S

Clinical Social Worker in Gahanna, OH · enumerated 2017.

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

National Provider Identifier

1992246623

Verified

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Registry record

Entity type Individual (Type 1)

Name Ellen S Grudowski

Credential LISW-S

Sex Female

Practice address Gahanna, OH, 43230

Phone (614) 653-1665

Enumeration date Mar 14, 2017

Last updated in NPPES Feb 17, 2025

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License I.1901820-SUPV (OH) Primary

Other identifiers

Identifier	Type	State	Issuer
2846675	Medicaid	OH	-

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

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 Ellen Grudowski?

Ellen Grudowski 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 2026-07-13. Provider record last updated 2025-02-17.