Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Sheilah Cassidy Perrin, PSY.D

Psychologist in North Chicago, IL · enumerated 2006.

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

National Provider Identifier

1114023843

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Registry record

Entity type Individual (Type 1)

Name Dr. Sheilah Cassidy Perrin

Credential PSY.D

Sex Female

Practice address 3001 Green Bay Rd, North Chicago, IL, 60064

Phone (224) 610-4010

Fax (224) 610-3824

Enumeration date Sep 16, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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

Where does Sheilah Perrin practice?

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

What is the NPI number for Sheilah Perrin?

The National Provider Identifier (NPI) for Sheilah Perrin is 1114023843, 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 2007-07-08.