Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mason Paul Cook

Physician Assistant in Slidell, LA · enumerated 2021.

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

National Provider Identifier

1144989641

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Registry record

Entity type Individual (Type 1)

Name Mason Paul Cook

Sex Male

Practice address 100 Medical Center Dr, Slidell, LA, 70461

Phone (985) 649-7070

Enumeration date Dec 12, 2021

Last updated in NPPES Mar 31, 2022

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 330167 (LA) 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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mason Cook?

Mason Cook is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-31.