Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Heather Marie Stewart, PHD LCSW

Social Worker in Berwyn, IL · enumerated 2006.

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

National Provider Identifier

1548369077

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Registry record

Entity type Individual (Type 1)

Name Ms. Heather Marie Stewart

Credential PHD LCSW

Sex Female

Practice address 6918 Windsor Ave, Berwyn, IL, 60402

Phone (708) 795-4800

Fax (708) 795-4834

Enumeration date Sep 21, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers Primary

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 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 Heather Stewart?

Heather Stewart is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.