Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Allen

Q: What is the NPI number for Mark Allen?

The National Provider Identifier (NPI) for Mark Allen is 1831828318, a Type 1 (individual) record in the CMS NPPES registry.

Occupational Therapy Assistant in Medford, OR · enumerated 2022 · practices at Medford Operations, LLC.

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

National Provider Identifier

1831828318

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Registry record

Entity type Individual (Type 1)

Name Mark Allen

Sex Male

Practice address 625 Stevens St, Medford, OR, 97504

Phone (541) 779-3551

Enumeration date Jun 9, 2022

Last updated in NPPES Jun 9, 2022

Taxonomy & licenses

224Z00000X Occupational Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers 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

What is the NPI number for Mark Allen?

The National Provider Identifier (NPI) for Mark Allen is 1831828318, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Allen practice?

The practice location on file with NPPES is in Medford, OR. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-09.