Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Sue Dailey, APRN

Adult Health Clinical Nurse Specialist in Downers Grove, IL · enumerated 2020.

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

National Provider Identifier

1053942318

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Registry record

Entity type Individual (Type 1)

Name Mary Sue Dailey

Credential APRN

Sex Female

Practice address 3815 Highland Ave, Downers Grove, IL, 60515

Phone (630) 275-5900

Enumeration date Jan 27, 2020

Last updated in NPPES Jan 27, 2020

Taxonomy & licenses

364SA2200X Adult Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 209-005144 (IL) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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 Mary Sue Dailey?

The National Provider Identifier (NPI) for Mary Sue Dailey is 1053942318, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Sue Dailey practice?

The practice location on file with NPPES is in Downers Grove, 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 2020-01-27.