Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mackenzie Gregory, OT

Specialist in Byram, MS · enumerated 2015 · practices at Drayer Physical Therapy Jackson LLC.

Data current as of Jul 11, 2026 · sourced from CMS NPPES

National Provider Identifier

1801276035

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Registry record

Entity type Individual (Type 1)

Name Mackenzie Gregory

Credential OT

Sex Female

Practice address 7213 S Siwell Rd, Byram, MS, 39272

Phone (601) 346-9191

Fax (601) 346-3044

Enumeration date Jun 3, 2015

Last updated in NPPES Jun 3, 2015

Taxonomy & licenses

174400000X Specialist Other Service Providers · License OT2471 (MS) Primary

OT — Occupational Therapist: A licensed therapist helping patients develop or recover skills for daily living and working. About the OT credential

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 Mackenzie Gregory?

Mackenzie Gregory is registered in NPPES with the primary taxonomy of Specialist. 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 2026-07-11. Provider record last updated 2015-06-03.