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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron M Williams, APRN-CRNA

Certified Registered Nurse Anesthetist in Omaha, NE · enumerated 2019 · practices at Unmc Physicians.

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

National Provider Identifier

1255996799

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Registry record

Entity type Individual (Type 1)
Name Aaron M Williams
Credential APRN-CRNA
Sex Male
Practice address Emile @ 42nd St, Omaha, NE, 68198
Enumeration date May 9, 2019
Last updated in NPPES May 9, 2019

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 101526 (NE) 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.

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Frequently asked questions

Is NPI 1255996799 active?
Yes, as of the latest NPPES snapshot, NPI 1255996799 is active (record last updated 2019-05-09).
How do I verify Aaron Williams's NPI record?
Cross-check NPI 1255996799 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-09.