Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Arthur E Ilharreguy, NP

Acute Care Nurse Practitioner in Cheyenne, WY · enumerated 2020.

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

National Provider Identifier

1568074672

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Registry record

Entity type Individual (Type 1)

Name Mr. Arthur E Ilharreguy

Credential NP

Sex Male

Practice address 214 E 23rd St, Cheyenne, WY, 82001

Phone (307) 634-2273

Enumeration date Aug 19, 2020

Last updated in NPPES Nov 7, 2022

Taxonomy & licenses

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APN.0995788-NP (CO) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 46592 (WY) Secondary

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 46592 (WY) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
RXN.0104942-NP	Other	CO	RXN

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 Arthur Ilharreguy?

The National Provider Identifier (NPI) for Arthur Ilharreguy is 1568074672, a Type 1 (individual) record in the CMS NPPES registry.

Where does Arthur Ilharreguy practice?

The practice location on file with NPPES is in Cheyenne, WY. 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 2022-11-07.