Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Steven Allen, RRT

General Care Registered Respiratory Therapist in Loma Linda, CA · enumerated 2008.

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

National Provider Identifier

1689845232

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Registry record

Entity type Individual (Type 1)

Name Mark Steven Allen

Credential RRT

Sex Male

Practice address 11201 Benton St, Loma Linda, CA, 92357

Phone (909) 825-7084

Enumeration date Mar 21, 2008

Last updated in NPPES Mar 21, 2008

Taxonomy & licenses

2279G1100X General Care Registered Respiratory Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 00023643 (CA) 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 Mark Allen's NPI record?

Cross-check NPI 1689845232 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689845232 active?

Yes, as of the latest NPPES snapshot, NPI 1689845232 is active (record last updated 2008-03-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-21.