Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ella Margaret Petersen, LCSW

Social Worker in Park Ridge, IL · enumerated 2022.

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

National Provider Identifier

1194436816

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Registry record

Entity type Individual (Type 1)

Name Ella Margaret Petersen

Credential LCSW

Sex Female

Practice address 1440 Renaissance Dr Ste 320, Park Ridge, IL, 60068

Phone (847) 759-9110

Fax (224) 985-2119

Enumeration date Dec 13, 2022

Last updated in NPPES May 13, 2026

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 150107244 (IL) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Ella Petersen?

The National Provider Identifier (NPI) for Ella Petersen is 1194436816, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ella Petersen practice?

The practice location on file with NPPES is in Park Ridge, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-13.