Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mark Allen, D.O.

Orthopaedic Surgery Physician in Gilbert, AZ · enumerated 2010 · practices at Center for Orthopedic Research and Education LLC.

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

National Provider Identifier

1124339676

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Registry record

Entity type Individual (Type 1)

Name Mark Allen

Credential D.O.

Sex Male

Practice address Gilbert, AZ, 85297

Phone (866) 974-2673

Fax (866) 939-2673

Enumeration date Jun 30, 2010

Last updated in NPPES Mar 3, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207XS0114X Adult Reconstructive Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 010716 (AZ) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 010716 (AZ) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

How do I verify Mark Allen's NPI record?

Cross-check NPI 1124339676 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1124339676 active?

Yes, as of the latest NPPES snapshot, NPI 1124339676 is active (record last updated 2026-03-03).

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