Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sarah Stearns Mcquillen, LSW

Social Worker in Northbrook, IL · enumerated 2018.

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

National Provider Identifier

1528561537

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Registry record

Entity type Individual (Type 1)

Name Sarah Stearns Mcquillen

Credential LSW

Sex Female

Practice address 40 Skokie Blvd, Northbrook, IL, 60062

Phone (847) 440-2168

Enumeration date Mar 15, 2018

Last updated in NPPES Mar 15, 2018

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 150.005386 (IL) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Sarah Mcquillen practice?

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

What is the NPI number for Sarah Mcquillen?

The National Provider Identifier (NPI) for Sarah Mcquillen is 1528561537, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-15.