Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Nathan Douglas Holliday, MS, FNP-BC

Family Nurse Practitioner in Wilmette, IL · enumerated 2020.

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

National Provider Identifier

1407464936

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Registry record

Entity type Individual (Type 1)

Name Mr. Nathan Douglas Holliday

Credential MS, FNP-BC

Sex Male

Practice address 3131 Lake Ave Unit C, Wilmette, IL, 60091

Phone (224) 529-1928

Enumeration date Jul 21, 2020

Last updated in NPPES Jul 21, 2020

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209.021663 (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

What is the NPI number for Nathan Holliday?

The National Provider Identifier (NPI) for Nathan Holliday is 1407464936, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nathan Holliday practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-21.