Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mason Leftwich

Registered Nurse in Shawnee, OK · enumerated 2015.

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

National Provider Identifier

1285010850

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Registry record

Entity type Individual (Type 1)

Name Mason Leftwich

Sex Male

Practice address 781 Grand Casino Blvd, Shawnee, OK, 74804

Phone (405) 964-5770

Enumeration date Aug 6, 2015

Last updated in NPPES Aug 6, 2015

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 110040 (OK) 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

How do I verify Mason Leftwich's NPI record?

Cross-check NPI 1285010850 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1285010850 active?

Yes, as of the latest NPPES snapshot, NPI 1285010850 is active (record last updated 2015-08-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-08-06.